123203220400 has 60 divisors (see below), whose sum is σ = 318764653312. Its totient is φ = 45490417920.

The previous prime is 123203220391. The next prime is 123203220431. The reversal of 123203220400 is 4022302321.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 11841264 + ... + 11851663.

Almost surely, 2^123203220400 is an apocalyptic number.

123203220400 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

123203220400 is an abundant number, since it is smaller than the sum of its proper divisors (195561432912).

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

123203220400 is a wasteful number, since it uses less digits than its factorization.

123203220400 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23692958 (or 23692947 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 19.

Adding to 123203220400 its reverse (4022302321), we get a palindrome (127225522721).

The spelling of 123203220400 in words is "one hundred twenty-three billion, two hundred three million, two hundred twenty thousand, four hundred".