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10122013402220 = 225714537082987
BaseRepresentation
bin1001001101001011011100…
…0000110110010001101100
31022211122200111222021221102
42103102313000312101230
52311314340412332340
633305553323422232
72063201633221106
oct223226700662154
938748614867842
1010122013402220
1132527a375a015
121175869984978
1358566a500245
1426dc9da1c576
1512846ba57215
hex934b703646c

10122013402220 has 24 divisors (see below), whose sum is σ = 21256528631184. Its totient is φ = 4048748125376.

The previous prime is 10122013402133. The next prime is 10122013402223. The reversal of 10122013402220 is 2220431022101.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a junction number, because it is equal to n+sod(n) for n = 10122013402192 and 10122013402201.

It is not an unprimeable number, because it can be changed into a prime (10122013402223) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2112434 + ... + 4970553.

It is an arithmetic number, because the mean of its divisors is an integer number (885688692966).

Almost surely, 210122013402220 is an apocalyptic number.

10122013402220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

10122013402220 is an abundant number, since it is smaller than the sum of its proper divisors (11134515228964).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

10122013402220 is a wasteful number, since it uses less digits than its factorization.

10122013402220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7154449 (or 7154447 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 20.

Adding to 10122013402220 its reverse (2220431022101), we get a palindrome (12342444424321).

The spelling of 10122013402220 in words is "ten trillion, one hundred twenty-two billion, thirteen million, four hundred two thousand, two hundred twenty".

Divisors: 1 2 4 5 10 20 71453 142906 285812 357265 714530 1429060 7082987 14165974 28331948 35414935 70829870 141659740 506100670111 1012201340222 2024402680444 2530503350555 5061006701110 10122013402220