131221022033 has 16 divisors (see below), whose sum is σ = 145731135744. Its totient is φ = 117607530240.

The previous prime is 131221022017. The next prime is 131221022047. The reversal of 131221022033 is 330220122131.

It is a cyclic number.

It is not a de Polignac number, because 131221022033 - 2⁴ = 131221022017 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 131221021996 and 131221022014.

It is not an unprimeable number, because it can be changed into a prime (131221022003) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2189783 + ... + 2248908.

It is an arithmetic number, because the mean of its divisors is an integer number (9108195984).

Almost surely, 2^131221022033 is an apocalyptic number.

It is an amenable number.

131221022033 is a deficient number, since it is larger than the sum of its proper divisors (14510113711).

131221022033 is a wasteful number, since it uses less digits than its factorization.

131221022033 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4438792.

The product of its (nonzero) digits is 432, while the sum is 20.

Adding to 131221022033 its reverse (330220122131), we get a palindrome (461441144164).

The spelling of 131221022033 in words is "one hundred thirty-one billion, two hundred twenty-one million, twenty-two thousand, thirty-three".