221131112112023 has 48 divisors (see below), whose sum is σ = 232811023011840. Its totient is φ = 209797364520000.

The previous prime is 221131112111999. The next prime is 221131112112049. The reversal of 221131112112023 is 320211211131122.

It is not a de Polignac number, because 221131112112023 - 2³⁴ = 221113932242839 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 221131112112023.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (221131112112073) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 20495973113 + ... + 20495983901.

It is an arithmetic number, because the mean of its divisors is an integer number (4850229646080).

Almost surely, 2^{221131112112023} is an apocalyptic number.

221131112112023 is a deficient number, since it is larger than the sum of its proper divisors (11679910899817).

221131112112023 is a wasteful number, since it uses less digits than its factorization.

221131112112023 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11500 (or 11349 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 23.

Adding to 221131112112023 its reverse (320211211131122), we get a palindrome (541342323243145).

The spelling of 221131112112023 in words is "two hundred twenty-one trillion, one hundred thirty-one billion, one hundred twelve million, one hundred twelve thousand, twenty-three".