20221111123231 has 16 divisors (see below), whose sum is σ = 21216056712448. Its totient is φ = 19247595321600.

The previous prime is 20221111123163. The next prime is 20221111123243. The reversal of 20221111123231 is 13232111112202.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 20221111123231 - 2¹³ = 20221111115039 is a prime.

It is a super-2 number, since 2×20221111123231² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20221111129231) 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, 117415021 + ... + 117587113.

It is an arithmetic number, because the mean of its divisors is an integer number (1326003544528).

Almost surely, 2^{20221111123231} is an apocalyptic number.

20221111123231 is a deficient number, since it is larger than the sum of its proper divisors (994945589217).

20221111123231 is a wasteful number, since it uses less digits than its factorization.

20221111123231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 234322.

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

Adding to 20221111123231 its reverse (13232111112202), we get a palindrome (33453222235433).

The spelling of 20221111123231 in words is "twenty trillion, two hundred twenty-one billion, one hundred eleven million, one hundred twenty-three thousand, two hundred thirty-one".