2113221211231 has 64 divisors (see below), whose sum is σ = 2497502085120. Its totient is φ = 1771619351040.

The previous prime is 2113221211229. The next prime is 2113221211259. The reversal of 2113221211231 is 1321121223112.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 2113221211231 - 2¹ = 2113221211229 is a prime.

It is a super-2 number, since 2×2113221211231² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2113221211831) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 384009826 + ... + 384015328.

It is an arithmetic number, because the mean of its divisors is an integer number (39023470080).

Almost surely, 2^{2113221211231} is an apocalyptic number.

2113221211231 is a deficient number, since it is larger than the sum of its proper divisors (384280873889).

2113221211231 is a wasteful number, since it uses less digits than its factorization.

2113221211231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6296.

The product of its digits is 288, while the sum is 22.

Adding to 2113221211231 its reverse (1321121223112), we get a palindrome (3434342434343).

The spelling of 2113221211231 in words is "two trillion, one hundred thirteen billion, two hundred twenty-one million, two hundred eleven thousand, two hundred thirty-one".