23211142181 has 2 divisors, whose sum is σ = 23211142182. Its totient is φ = 23211142180.

The previous prime is 23211142169. The next prime is 23211142211. The reversal of 23211142181 is 18124111232.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 23204428900 + 6713281 = 152330^2 + 2591^2 .

It is a cyclic number.

It is not a de Polignac number, because 23211142181 - 2²⁶ = 23144033317 is a prime.

It is a super-2 number, since 2×23211142181² (a number of 22 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 23211142181.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (23211142781) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11605571090 + 11605571091.

It is an arithmetic number, because the mean of its divisors is an integer number (11605571091).

Almost surely, 2^23211142181 is an apocalyptic number.

It is an amenable number.

23211142181 is a deficient number, since it is larger than the sum of its proper divisors (1).

23211142181 is an equidigital number, since it uses as much as digits as its factorization.

23211142181 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 768, while the sum is 26.

The spelling of 23211142181 in words is "twenty-three billion, two hundred eleven million, one hundred forty-two thousand, one hundred eighty-one".