20011331322 has 12 divisors (see below), whose sum is σ = 43357884570. Its totient is φ = 6670443768.

The previous prime is 20011331311. The next prime is 20011331383. The reversal of 20011331322 is 22313311002.

20011331322 is a `hidden beast` number, since 2 + 0 + 0 + 11 + 331 + 322 = 666.

It can be written as a sum of positive squares in only one way, i.e., 17247831561 + 2763499761 = 131331^2 + 52569^2 .

It is a Harshad number since it is a multiple of its sum of digits (18), and also a Moran number because the ratio is a prime number: 1111740629 = 20011331322 / (2 + 0 + 0 + 1 + 1 + 3 + 3 + 1 + 3 + 2 + 2).

It is a junction number, because it is equal to n+sod(n) for n = 20011331295 and 20011331304.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 555870297 + ... + 555870332.

Almost surely, 2^20011331322 is an apocalyptic number.

20011331322 is an abundant number, since it is smaller than the sum of its proper divisors (23346553248).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20011331322 is a wasteful number, since it uses less digits than its factorization.

20011331322 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1111740637 (or 1111740634 counting only the distinct ones).

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

Adding to 20011331322 its reverse (22313311002), we get a palindrome (42324642324).

The spelling of 20011331322 in words is "twenty billion, eleven million, three hundred thirty-one thousand, three hundred twenty-two".