31222111122213 has 16 divisors (see below), whose sum is σ = 45414085363200. Its totient is φ = 18922447610480.

The previous prime is 31222111122203. The next prime is 31222111122259.

31222111122213 is nontrivially palindromic in base 10.

It is a cyclic number.

It is not a de Polignac number, because 31222111122213 - 2¹⁸ = 31222110860069 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31222111122203) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 18562318 + ... + 20174336.

It is an arithmetic number, because the mean of its divisors is an integer number (2838380335200).

Almost surely, 2^{31222111122213} is an apocalyptic number.

31222111122213 is a gapful number since it is divisible by the number (33) formed by its first and last digit.

It is an amenable number.

31222111122213 is a deficient number, since it is larger than the sum of its proper divisors (14191974240987).

31222111122213 is a wasteful number, since it uses less digits than its factorization.

31222111122213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2198952.

The product of its digits is 576, while the sum is 24.

It can be divided in two parts, 3122211 and 1122213, that added together give a palindrome (4244424).

The spelling of 31222111122213 in words is "thirty-one trillion, two hundred twenty-two billion, one hundred eleven million, one hundred twenty-two thousand, two hundred thirteen".