20031122133 has 24 divisors (see below), whose sum is σ = 31614313536. Its totient is φ = 12120796800.

The previous prime is 20031122129. The next prime is 20031122141. The reversal of 20031122133 is 33122113002.

20031122133 is a `hidden beast` number, since 200 + 311 + 22 + 133 = 666.

It is not a de Polignac number, because 20031122133 - 2² = 20031122129 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20031122173) 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 23 ways as a sum of consecutive naturals, for example, 97860 + ... + 222797.

It is an arithmetic number, because the mean of its divisors is an integer number (1317263064).

Almost surely, 2^20031122133 is an apocalyptic number.

It is an amenable number.

20031122133 is a deficient number, since it is larger than the sum of its proper divisors (11583191403).

20031122133 is a wasteful number, since it uses less digits than its factorization.

20031122133 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 321305 (or 321302 counting only the distinct ones).

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

Adding to 20031122133 its reverse (33122113002), we get a palindrome (53153235135).

The spelling of 20031122133 in words is "twenty billion, thirty-one million, one hundred twenty-two thousand, one hundred thirty-three".