2121310100310 has 64 divisors (see below), whose sum is σ = 5161614978240. Its totient is φ = 557854801920.

The previous prime is 2121310100303. The next prime is 2121310100369. The reversal of 2121310100310 is 130010131212.

It is a happy number.

It is a super-2 number, since 2×2121310100310² (a number of 25 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a self number, because there is not a number n which added to its sum of digits gives 2121310100310.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 16336240 + ... + 16465580.

It is an arithmetic number, because the mean of its divisors is an integer number (80650234035).

Almost surely, 2^{2121310100310} is an apocalyptic number.

2121310100310 is an abundant number, since it is smaller than the sum of its proper divisors (3040304877930).

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

2121310100310 is a wasteful number, since it uses less digits than its factorization.

2121310100310 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 136913.

The product of its (nonzero) digits is 36, while the sum is 15.

Adding to 2121310100310 its reverse (130010131212), we get a palindrome (2251320231522).

The spelling of 2121310100310 in words is "two trillion, one hundred twenty-one billion, three hundred ten million, one hundred thousand, three hundred ten".