123310022100 has 72 divisors (see below), whose sum is σ = 366419651808. Its totient is φ = 31993948800.

The previous prime is 123310022093. The next prime is 123310022117. The reversal of 123310022100 is 1220013321.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a self number, because there is not a number n which added to its sum of digits gives 123310022100.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 5543406 + ... + 5565605.

Almost surely, 2^123310022100 is an apocalyptic number.

123310022100 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

123310022100 is an abundant number, since it is smaller than the sum of its proper divisors (243109629708).

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

123310022100 is a wasteful number, since it uses less digits than its factorization.

123310022100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11109065 (or 11109058 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 15.

Adding to 123310022100 its reverse (1220013321), we get a palindrome (124530035421).

The spelling of 123310022100 in words is "one hundred twenty-three billion, three hundred ten million, twenty-two thousand, one hundred".