33120220131 has 24 divisors (see below), whose sum is σ = 50688958320. Its totient is φ = 20767159296.

The previous prime is 33120220129. The next prime is 33120220163. The reversal of 33120220131 is 13102202133.

33120220131 is a `hidden beast` number, since 3 + 312 + 0 + 220 + 131 = 666.

It is not a de Polignac number, because 33120220131 - 2¹ = 33120220129 is a prime.

It is a super-2 number, since 2×33120220131² (a number of 22 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (33120220171) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 153915 + ... + 299883.

It is an arithmetic number, because the mean of its divisors is an integer number (2112039930).

Almost surely, 2^33120220131 is an apocalyptic number.

33120220131 is a deficient number, since it is larger than the sum of its proper divisors (17568738189).

33120220131 is a wasteful number, since it uses less digits than its factorization.

33120220131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 147475 (or 147472 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 18.

Adding to 33120220131 its reverse (13102202133), we get a palindrome (46222422264).

The spelling of 33120220131 in words is "thirty-three billion, one hundred twenty million, two hundred twenty thousand, one hundred thirty-one".