2121322331020 has 96 divisors (see below), whose sum is σ = 4558179225600. Its totient is φ = 829019675904.

The previous prime is 2121322330943. The next prime is 2121322331033. The reversal of 2121322331020 is 201332231212.

It is a junction number, because it is equal to n+sod(n) for n = 2121322330982 and 2121322331000.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 241521549 + ... + 241530331.

It is an arithmetic number, because the mean of its divisors is an integer number (47481033600).

Almost surely, 2^{2121322331020} is an apocalyptic number.

2121322331020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2121322331020 is an abundant number, since it is smaller than the sum of its proper divisors (2436856894580).

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

2121322331020 is a wasteful number, since it uses less digits than its factorization.

2121322331020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10087 (or 10085 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 22.

Adding to 2121322331020 its reverse (201332231212), we get a palindrome (2322654562232).

The spelling of 2121322331020 in words is "two trillion, one hundred twenty-one billion, three hundred twenty-two million, three hundred thirty-one thousand, twenty".