2312121033020 has 24 divisors (see below), whose sum is σ = 4860163673568. Its totient is φ = 923951364800.

The previous prime is 2312121033017. The next prime is 2312121033049. The reversal of 2312121033020 is 203301212132.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a junction number, because it is equal to n+sod(n) for n = 2312121032983 and 2312121033001.

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, 56044391 + ... + 56085630.

It is an arithmetic number, because the mean of its divisors is an integer number (202506819732).

Almost surely, 2^{2312121033020} is an apocalyptic number.

2312121033020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2312121033020 is an abundant number, since it is smaller than the sum of its proper divisors (2548042640548).

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

2312121033020 is a wasteful number, since it uses less digits than its factorization.

2312121033020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 112131061 (or 112131059 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 20.

Adding to 2312121033020 its reverse (203301212132), we get a palindrome (2515422245152).

The spelling of 2312121033020 in words is "two trillion, three hundred twelve billion, one hundred twenty-one million, thirty-three thousand, twenty".