20122031133 has 6 divisors (see below), whose sum is σ = 29065156094. Its totient is φ = 13414687416.

The previous prime is 20122031107. The next prime is 20122031173. The reversal of 20122031133 is 33113022102.

It can be written as a sum of positive squares in only one way, i.e., 15366825369 + 4755205764 = 123963^2 + 68958^2 .

It is not a de Polignac number, because 20122031133 - 2¹⁴ = 20122014749 is a prime.

It is a super-2 number, since 2×20122031133² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20122031173) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1117890610 + ... + 1117890627.

Almost surely, 2^20122031133 is an apocalyptic number.

It is an amenable number.

20122031133 is a deficient number, since it is larger than the sum of its proper divisors (8943124961).

20122031133 is a wasteful number, since it uses less digits than its factorization.

20122031133 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2235781243 (or 2235781240 counting only the distinct ones).

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

Adding to 20122031133 its reverse (33113022102), we get a palindrome (53235053235).

The spelling of 20122031133 in words is "twenty billion, one hundred twenty-two million, thirty-one thousand, one hundred thirty-three".