2121313113320 has 32 divisors (see below), whose sum is σ = 4874506732800. Its totient is φ = 830471515968.

The previous prime is 2121313113313. The next prime is 2121313113329. The reversal of 2121313113320 is 233113131212.

It is a super-2 number, since 2×2121313113320² (a number of 25 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (2121313113329) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 564177140 + ... + 564180899.

It is an arithmetic number, because the mean of its divisors is an integer number (152328335400).

Almost surely, 2^{2121313113320} is an apocalyptic number.

2121313113320 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2121313113320 is an abundant number, since it is smaller than the sum of its proper divisors (2753193619480).

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

2121313113320 is a wasteful number, since it uses less digits than its factorization.

2121313113320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1128358097 (or 1128358093 counting only the distinct ones).

The product of its (nonzero) digits is 648, while the sum is 23.

Adding to 2121313113320 its reverse (233113131212), we get a palindrome (2354426244532).

The spelling of 2121313113320 in words is "two trillion, one hundred twenty-one billion, three hundred thirteen million, one hundred thirteen thousand, three hundred twenty".