2121013321310 has 128 divisors (see below), whose sum is σ = 4388416704000. Its totient is φ = 732475441152.

The previous prime is 2121013321249. The next prime is 2121013321367. The reversal of 2121013321310 is 131233101212.

It is a happy number.

It is a super-2 number, since 2×2121013321310² (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 63 ways as a sum of consecutive naturals, for example, 15717806 + ... + 15852174.

It is an arithmetic number, because the mean of its divisors is an integer number (34284505500).

Almost surely, 2^{2121013321310} is an apocalyptic number.

2121013321310 is an abundant number, since it is smaller than the sum of its proper divisors (2267403382690).

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

2121013321310 is a wasteful number, since it uses less digits than its factorization.

2121013321310 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 134550.

The product of its (nonzero) digits is 216, while the sum is 20.

Adding to 2121013321310 its reverse (131233101212), we get a palindrome (2252246422522).

The spelling of 2121013321310 in words is "two trillion, one hundred twenty-one billion, thirteen million, three hundred twenty-one thousand, three hundred ten".