31021222022033 has 4 divisors (see below), whose sum is σ = 31119080766900. Its totient is φ = 30923363277168.

The previous prime is 31021222021981. The next prime is 31021222022069. The reversal of 31021222022033 is 33022022212013.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 10484436769024 + 20536785253009 = 3237968^2 + 4531753^2 .

It is a cyclic number.

It is not a de Polignac number, because 31021222022033 - 2¹⁸ = 31021221759889 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (31021222025033) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 48929371958 + ... + 48929372591.

It is an arithmetic number, because the mean of its divisors is an integer number (7779770191725).

Almost surely, 2^{31021222022033} is an apocalyptic number.

It is an amenable number.

31021222022033 is a deficient number, since it is larger than the sum of its proper divisors (97858744867).

31021222022033 is an equidigital number, since it uses as much as digits as its factorization.

31021222022033 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 97858744866.

The product of its (nonzero) digits is 1728, while the sum is 23.

Adding to 31021222022033 its reverse (33022022212013), we get a palindrome (64043244234046).

The spelling of 31021222022033 in words is "thirty-one trillion, twenty-one billion, two hundred twenty-two million, twenty-two thousand, thirty-three".