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10220030123 = 13197748317
BaseRepresentation
bin10011000010010100…
…10100100010101011
3222101020210022201012
421201022110202223
5131412311430443
64410042414135
7511155552122
oct114112244253
928336708635
1010220030123
114374a38996
121b9280134b
13c6b468804
146cd47aab9
153ec372118
hex2612948ab

10220030123 has 4 divisors (see below), whose sum is σ = 10227779760. Its totient is φ = 10212280488.

The previous prime is 10220030087. The next prime is 10220030129. The reversal of 10220030123 is 32103002201.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 10220030123 - 220 = 10218981547 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 10220030098 and 10220030107.

It is not an unprimeable number, because it can be changed into a prime (10220030129) 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, 3872840 + ... + 3875477.

It is an arithmetic number, because the mean of its divisors is an integer number (2556944940).

Almost surely, 210220030123 is an apocalyptic number.

10220030123 is a deficient number, since it is larger than the sum of its proper divisors (7749637).

10220030123 is an equidigital number, since it uses as much as digits as its factorization.

10220030123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7749636.

The product of its (nonzero) digits is 72, while the sum is 14.

Adding to 10220030123 its reverse (32103002201), we get a palindrome (42323032324).

The spelling of 10220030123 in words is "ten billion, two hundred twenty million, thirty thousand, one hundred twenty-three".

Divisors: 1 1319 7748317 10220030123