2331133021081 has 2 divisors, whose sum is σ = 2331133021082. Its totient is φ = 2331133021080.

The previous prime is 2331133021067. The next prime is 2331133021097. The reversal of 2331133021081 is 1801203311332.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2278424208025 + 52708813056 = 1509445^2 + 229584^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2331133021081 is a prime.

It is a super-3 number, since 3×2331133021081³ (a number of 38 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is not a weakly prime, because it can be changed into another prime (2331133021181) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1165566510540 + 1165566510541.

It is an arithmetic number, because the mean of its divisors is an integer number (1165566510541).

Almost surely, 2^{2331133021081} is an apocalyptic number.

It is an amenable number.

2331133021081 is a deficient number, since it is larger than the sum of its proper divisors (1).

2331133021081 is an equidigital number, since it uses as much as digits as its factorization.

2331133021081 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2592, while the sum is 28.

The spelling of 2331133021081 in words is "two trillion, three hundred thirty-one billion, one hundred thirty-three million, twenty-one thousand, eighty-one".