2121122331213 has 32 divisors (see below), whose sum is σ = 2893127328000. Its totient is φ = 1381919616000.

The previous prime is 2121122331203. The next prime is 2121122331239. The reversal of 2121122331213 is 3121332211212.

It is not a de Polignac number, because 2121122331213 - 2⁴ = 2121122331197 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2121122331203) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 25486773 + ... + 25569861.

It is an arithmetic number, because the mean of its divisors is an integer number (90410229000).

Almost surely, 2^{2121122331213} is an apocalyptic number.

It is an amenable number.

2121122331213 is a deficient number, since it is larger than the sum of its proper divisors (772004996787).

2121122331213 is a wasteful number, since it uses less digits than its factorization.

2121122331213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 84053.

The product of its digits is 864, while the sum is 24.

Adding to 2121122331213 its reverse (3121332211212), we get a palindrome (5242454542425).

The spelling of 2121122331213 in words is "two trillion, one hundred twenty-one billion, one hundred twenty-two million, three hundred thirty-one thousand, two hundred thirteen".