20221111112173 has 2 divisors, whose sum is σ = 20221111112174. Its totient is φ = 20221111112172.

The previous prime is 20221111112159. The next prime is 20221111112219. The reversal of 20221111112173 is 37121111112202.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 12452972881129 + 7768138231044 = 3528877^2 + 2787138^2 .

It is a cyclic number.

It is not a de Polignac number, because 20221111112173 - 2⁵ = 20221111112141 is a prime.

It is a super-2 number, since 2×20221111112173² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20221115112173) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10110555556086 + 10110555556087.

It is an arithmetic number, because the mean of its divisors is an integer number (10110555556087).

Almost surely, 2^{20221111112173} is an apocalyptic number.

It is an amenable number.

20221111112173 is a deficient number, since it is larger than the sum of its proper divisors (1).

20221111112173 is an equidigital number, since it uses as much as digits as its factorization.

20221111112173 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 336, while the sum is 25.

Adding to 20221111112173 its reverse (37121111112202), we get a palindrome (57342222224375).

The spelling of 20221111112173 in words is "twenty trillion, two hundred twenty-one billion, one hundred eleven million, one hundred twelve thousand, one hundred seventy-three".