22200121232173 has 2 divisors, whose sum is σ = 22200121232174. Its totient is φ = 22200121232172.

The previous prime is 22200121232123. The next prime is 22200121232183. The reversal of 22200121232173 is 37123212100222.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 14963574685284 + 7236546546889 = 3868278^2 + 2690083^2 .

It is a cyclic number.

It is not a de Polignac number, because 22200121232173 - 2²¹ = 22200119135021 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (22200121232123) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11100060616086 + 11100060616087.

It is an arithmetic number, because the mean of its divisors is an integer number (11100060616087).

Almost surely, 2^{22200121232173} is an apocalyptic number.

It is an amenable number.

22200121232173 is a deficient number, since it is larger than the sum of its proper divisors (1).

22200121232173 is an equidigital number, since it uses as much as digits as its factorization.

22200121232173 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4032, while the sum is 28.

Adding to 22200121232173 its reverse (37123212100222), we get a palindrome (59323333332395).

The spelling of 22200121232173 in words is "twenty-two trillion, two hundred billion, one hundred twenty-one million, two hundred thirty-two thousand, one hundred seventy-three".