123110202100 has 18 divisors (see below), whose sum is σ = 267149138774. Its totient is φ = 49244080800.

The previous prime is 123110202067. The next prime is 123110202119. The reversal of 123110202100 is 1202011321.

It can be written as a sum of positive squares in 3 ways, for example, as 37427545444 + 85682656656 = 193462^2 + 292716^2 .

It is a super-2 number, since 2×123110202100² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 615550911 + ... + 615551110.

Almost surely, 2^123110202100 is an apocalyptic number.

123110202100 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

123110202100 is an abundant number, since it is smaller than the sum of its proper divisors (144038936674).

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

123110202100 is a wasteful number, since it uses less digits than its factorization.

123110202100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1231102035 (or 1231102028 counting only the distinct ones).

The product of its (nonzero) digits is 24, while the sum is 13.

Adding to 123110202100 its reverse (1202011321), we get a palindrome (124312213421).

The spelling of 123110202100 in words is "one hundred twenty-three billion, one hundred ten million, two hundred two thousand, one hundred".