323212021132181 has 2 divisors, whose sum is σ = 323212021132182. Its totient is φ = 323212021132180.

The previous prime is 323212021132159. The next prime is 323212021132193. The reversal of 323212021132181 is 181231120212323.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 244853957796100 + 78358063336081 = 15647810^2 + 8852009^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-323212021132181 is a prime.

It is a super-2 number, since 2×323212021132181² (a number of 30 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (323212021134181) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 161606010566090 + 161606010566091.

It is an arithmetic number, because the mean of its divisors is an integer number (161606010566091).

Almost surely, 2^{323212021132181} is an apocalyptic number.

It is an amenable number.

323212021132181 is a deficient number, since it is larger than the sum of its proper divisors (1).

323212021132181 is an equidigital number, since it uses as much as digits as its factorization.

323212021132181 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 6912, while the sum is 32.

The spelling of 323212021132181 in words is "three hundred twenty-three trillion, two hundred twelve billion, twenty-one million, one hundred thirty-two thousand, one hundred eighty-one".