23212000021181 has 2 divisors, whose sum is σ = 23212000021182. Its totient is φ = 23212000021180.

The previous prime is 23212000021163. The next prime is 23212000021247. The reversal of 23212000021181 is 18112000021232.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 22752947700025 + 459052321156 = 4770005^2 + 677534^2 .

It is a cyclic number.

It is not a de Polignac number, because 23212000021181 - 2¹⁸ = 23211999759037 is a prime.

It is a super-2 number, since 2×23212000021181² (a number of 28 digits) contains 22 as substring.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (23212000021981) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11606000010590 + 11606000010591.

It is an arithmetic number, because the mean of its divisors is an integer number (11606000010591).

Almost surely, 2^{23212000021181} is an apocalyptic number.

It is an amenable number.

23212000021181 is a deficient number, since it is larger than the sum of its proper divisors (1).

23212000021181 is an equidigital number, since it uses as much as digits as its factorization.

23212000021181 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 384, while the sum is 23.

The spelling of 23212000021181 in words is "twenty-three trillion, two hundred twelve billion, twenty-one thousand, one hundred eighty-one".