33231302140021 has 2 divisors, whose sum is σ = 33231302140022. Its totient is φ = 33231302140020.

The previous prime is 33231302140019. The next prime is 33231302140087. The reversal of 33231302140021 is 12004120313233.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 27752140080900 + 5479162059121 = 5268030^2 + 2340761^2 .

It is a cyclic number.

It is not a de Polignac number, because 33231302140021 - 2¹ = 33231302140019 is a prime.

It is a super-2 number, since 2×33231302140021² (a number of 28 digits) contains 22 as substring.

Together with 33231302140019, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (33231302149021) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 16615651070010 + 16615651070011.

It is an arithmetic number, because the mean of its divisors is an integer number (16615651070011).

Almost surely, 2^{33231302140021} is an apocalyptic number.

It is an amenable number.

33231302140021 is a deficient number, since it is larger than the sum of its proper divisors (1).

33231302140021 is an equidigital number, since it uses as much as digits as its factorization.

33231302140021 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 25.

Adding to 33231302140021 its reverse (12004120313233), we get a palindrome (45235422453254).

The spelling of 33231302140021 in words is "thirty-three trillion, two hundred thirty-one billion, three hundred two million, one hundred forty thousand, twenty-one".