33121100131 has 12 divisors (see below), whose sum is σ = 38565000720. Its totient is φ = 28362712560.

The previous prime is 33121100107. The next prime is 33121100167. The reversal of 33121100131 is 13100112133.

It is not a de Polignac number, because 33121100131 - 2¹¹ = 33121098083 is a prime.

It is a super-2 number, since 2×33121100131² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (33121100171) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 266551 + ... + 370528.

It is an arithmetic number, because the mean of its divisors is an integer number (3213750060).

Almost surely, 2^33121100131 is an apocalyptic number.

33121100131 is a deficient number, since it is larger than the sum of its proper divisors (5443900589).

33121100131 is a wasteful number, since it uses less digits than its factorization.

33121100131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 638154 (or 638147 counting only the distinct ones).

The product of its (nonzero) digits is 54, while the sum is 16.

Adding to 33121100131 its reverse (13100112133), we get a palindrome (46221212264).

The spelling of 33121100131 in words is "thirty-three billion, one hundred twenty-one million, one hundred thousand, one hundred thirty-one".