32121200002081 has 2 divisors, whose sum is σ = 32121200002082. Its totient is φ = 32121200002080.

The previous prime is 32121200002039. The next prime is 32121200002153. The reversal of 32121200002081 is 18020000212123.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 29204123879056 + 2917076123025 = 5404084^2 + 1707945^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-32121200002081 is a prime.

It is a super-2 number, since 2×32121200002081² (a number of 28 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (32121200012081) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 16060600001040 + 16060600001041.

It is an arithmetic number, because the mean of its divisors is an integer number (16060600001041).

Almost surely, 2^{32121200002081} is an apocalyptic number.

It is an amenable number.

32121200002081 is a deficient number, since it is larger than the sum of its proper divisors (1).

32121200002081 is an equidigital number, since it uses as much as digits as its factorization.

32121200002081 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 384, while the sum is 22.

The spelling of 32121200002081 in words is "thirty-two trillion, one hundred twenty-one billion, two hundred million, two thousand, eighty-one".