102100000023 has 48 divisors (see below), whose sum is σ = 173202958656. Its totient is φ = 56739847680.

The previous prime is 102100000021. The next prime is 102100000031. The reversal of 102100000023 is 320000001201.

It is a happy number.

It is not a de Polignac number, because 102100000023 - 2¹ = 102100000021 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (9).

It is a junction number, because it is equal to n+sod(n) for n = 102099999960 and 102100000014.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (102100000021) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 756465 + ... + 881157.

It is an arithmetic number, because the mean of its divisors is an integer number (3608394972).

Almost surely, 2^102100000023 is an apocalyptic number.

102100000023 is a deficient number, since it is larger than the sum of its proper divisors (71102958633).

102100000023 is a wasteful number, since it uses less digits than its factorization.

102100000023 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 125064 (or 125061 counting only the distinct ones).

The product of its (nonzero) digits is 12, while the sum is 9.

Adding to 102100000023 its reverse (320000001201), we get a palindrome (422100001224).

The spelling of 102100000023 in words is "one hundred two billion, one hundred million, twenty-three", and thus it is an aban number.