2121131312310 has 64 divisors (see below), whose sum is σ = 5220706867200. Its totient is φ = 551250094080.

The previous prime is 2121131312273. The next prime is 2121131312357. The reversal of 2121131312310 is 132131311212.

It is a super-2 number, since 2×2121131312310² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

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, 1251846 + ... + 2410265.

It is an arithmetic number, because the mean of its divisors is an integer number (81573544800).

Almost surely, 2^{2121131312310} is an apocalyptic number.

2121131312310 is an abundant number, since it is smaller than the sum of its proper divisors (3099575554890).

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

2121131312310 is a wasteful number, since it uses less digits than its factorization.

2121131312310 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3662613.

The product of its (nonzero) digits is 216, while the sum is 21.

Adding to 2121131312310 its reverse (132131311212), we get a palindrome (2253262623522).

The spelling of 2121131312310 in words is "two trillion, one hundred twenty-one billion, one hundred thirty-one million, three hundred twelve thousand, three hundred ten".