185221125941 has 2 divisors, whose sum is σ = 185221125942. Its totient is φ = 185221125940.

The previous prime is 185221125931. The next prime is 185221126043. The reversal of 185221125941 is 149521122581.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 171337217041 + 13883908900 = 413929^2 + 117830^2 .

It is a cyclic number.

It is not a de Polignac number, because 185221125941 - 2²² = 185216931637 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (185221125931) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 92610562970 + 92610562971.

It is an arithmetic number, because the mean of its divisors is an integer number (92610562971).

Almost surely, 2^185221125941 is an apocalyptic number.

It is an amenable number.

185221125941 is a deficient number, since it is larger than the sum of its proper divisors (1).

185221125941 is an equidigital number, since it uses as much as digits as its factorization.

185221125941 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 57600, while the sum is 41.

The spelling of 185221125941 in words is "one hundred eighty-five billion, two hundred twenty-one million, one hundred twenty-five thousand, nine hundred forty-one".