20131322122 has 4 divisors (see below), whose sum is σ = 30196983186. Its totient is φ = 10065661060.

The previous prime is 20131322117. The next prime is 20131322147. The reversal of 20131322122 is 22122313102.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 17646199921 + 2485122201 = 132839^2 + 49851^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 20131322122.

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 5032830529 + ... + 5032830532.

Almost surely, 2^20131322122 is an apocalyptic number.

20131322122 is a deficient number, since it is larger than the sum of its proper divisors (10065661064).

20131322122 is a wasteful number, since it uses less digits than its factorization.

20131322122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10065661063.

The product of its (nonzero) digits is 288, while the sum is 19.

Adding to 20131322122 its reverse (22122313102), we get a palindrome (42253635224).

The spelling of 20131322122 in words is "twenty billion, one hundred thirty-one million, three hundred twenty-two thousand, one hundred twenty-two".