12400232020 has 24 divisors (see below), whose sum is σ = 28407804768. Its totient is φ = 4509175200.

The previous prime is 12400231997. The next prime is 12400232057. The reversal of 12400232020 is 2023200421.

It is a junction number, because it is equal to n+sod(n) for n = 12400231985 and 12400232003.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 28182126 + ... + 28182565.

It is an arithmetic number, because the mean of its divisors is an integer number (1183658532).

Almost surely, 2^12400232020 is an apocalyptic number.

12400232020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12400232020 is an abundant number, since it is smaller than the sum of its proper divisors (16007572748).

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

12400232020 is a wasteful number, since it uses less digits than its factorization.

12400232020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 56364711 (or 56364709 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 16.

Adding to 12400232020 its reverse (2023200421), we get a palindrome (14423432441).

The spelling of 12400232020 in words is "twelve billion, four hundred million, two hundred thirty-two thousand, twenty".