20221111129231 has 2 divisors, whose sum is σ = 20221111129232. Its totient is φ = 20221111129230.

The previous prime is 20221111129229. The next prime is 20221111129243. The reversal of 20221111129231 is 13292111112202.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 20221111129231 - 2¹ = 20221111129229 is a prime.

It is a super-2 number, since 2×20221111129231² (a number of 27 digits) contains 22 as substring.

Together with 20221111129229, it forms a pair of twin primes.

It is a self number, because there is not a number n which added to its sum of digits gives 20221111129231.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20221111189231) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10110555564615 + 10110555564616.

It is an arithmetic number, because the mean of its divisors is an integer number (10110555564616).

Almost surely, 2^{20221111129231} is an apocalyptic number.

20221111129231 is a deficient number, since it is larger than the sum of its proper divisors (1).

20221111129231 is an equidigital number, since it uses as much as digits as its factorization.

20221111129231 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 864, while the sum is 28.

The spelling of 20221111129231 in words is "twenty trillion, two hundred twenty-one billion, one hundred eleven million, one hundred twenty-nine thousand, two hundred thirty-one".