1232400200020 has 36 divisors (see below), whose sum is σ = 2844705591252. Its totient is φ = 448145526400.

The previous prime is 1232400200011. The next prime is 1232400200099. The reversal of 1232400200020 is 200020042321.

It can be written as a sum of positive squares in 2 ways, for example, as 739073773636 + 493326426384 = 859694^2 + 702372^2 .

It is a junction number, because it is equal to n+sod(n) for n = 1232400199967 and 1232400200003.

It is a congruent number.

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, 254625721 + ... + 254630560.

It is an arithmetic number, because the mean of its divisors is an integer number (79019599757).

Almost surely, 2^{1232400200020} is an apocalyptic number.

1232400200020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1232400200020 is an abundant number, since it is smaller than the sum of its proper divisors (1612305391232).

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

1232400200020 is a wasteful number, since it uses less digits than its factorization.

1232400200020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 509256312 (or 509256299 counting only the distinct ones).

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

Adding to 1232400200020 its reverse (200020042321), we get a palindrome (1432420242341).

The spelling of 1232400200020 in words is "one trillion, two hundred thirty-two billion, four hundred million, two hundred thousand, twenty".