2121012013110 has 64 divisors (see below), whose sum is σ = 5209197903360. Its totient is φ = 552408595200.

The previous prime is 2121012013093. The next prime is 2121012013139. The reversal of 2121012013110 is 113102101212.

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 2121012013110.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 19813911 + ... + 19920669.

It is an arithmetic number, because the mean of its divisors is an integer number (81393717240).

Almost surely, 2^{2121012013110} is an apocalyptic number.

2121012013110 is an abundant number, since it is smaller than the sum of its proper divisors (3088185890250).

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

2121012013110 is a wasteful number, since it uses less digits than its factorization.

2121012013110 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 122213.

The product of its (nonzero) digits is 24, while the sum is 15.

Adding to 2121012013110 its reverse (113102101212), we get a palindrome (2234114114322).

The spelling of 2121012013110 in words is "two trillion, one hundred twenty-one billion, twelve million, thirteen thousand, one hundred ten".