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10012131020 = 225500606551
BaseRepresentation
bin10010101001100010…
…01111111011001100
3221211202120221202102
421110301033323030
5131001101143040
64333254414232
7503052465233
oct112461177314
927752527672
1010012131020
114278650251
121b35061378
13c37376ca8
146ad9ddb1a
153d8ea7515
hex254c4fecc

10012131020 has 12 divisors (see below), whose sum is σ = 21025475184. Its totient is φ = 4004852400.

The previous prime is 10012130993. The next prime is 10012131029. The reversal of 10012131020 is 2013121001.

It is a junction number, because it is equal to n+sod(n) for n = 10012130992 and 10012131010.

It is not an unprimeable number, because it can be changed into a prime (10012131029) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 250303256 + ... + 250303295.

It is an arithmetic number, because the mean of its divisors is an integer number (1752122932).

Almost surely, 210012131020 is an apocalyptic number.

10012131020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

10012131020 is an abundant number, since it is smaller than the sum of its proper divisors (11013344164).

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

10012131020 is a wasteful number, since it uses less digits than its factorization.

10012131020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 500606560 (or 500606558 counting only the distinct ones).

The product of its (nonzero) digits is 12, while the sum is 11.

Adding to 10012131020 its reverse (2013121001), we get a palindrome (12025252021).

The spelling of 10012131020 in words is "ten billion, twelve million, one hundred thirty-one thousand, twenty".

Divisors: 1 2 4 5 10 20 500606551 1001213102 2002426204 2503032755 5006065510 10012131020