20011022331 has 8 divisors (see below), whose sum is σ = 26683852560. Its totient is φ = 13339436832.

The previous prime is 20011022293. The next prime is 20011022341. The reversal of 20011022331 is 13322011002.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 20011022331 - 2⁶ = 20011022267 is a prime.

It is a super-2 number, since 2×20011022331² (a number of 21 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 20011022331.

It is not an unprimeable number, because it can be changed into a prime (20011022341) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 273000 + ... + 338453.

It is an arithmetic number, because the mean of its divisors is an integer number (3335481570).

Almost surely, 2^20011022331 is an apocalyptic number.

20011022331 is a deficient number, since it is larger than the sum of its proper divisors (6672830229).

20011022331 is a wasteful number, since it uses less digits than its factorization.

20011022331 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 622365.

The product of its (nonzero) digits is 72, while the sum is 15.

Adding to 20011022331 its reverse (13322011002), we get a palindrome (33333033333).

The spelling of 20011022331 in words is "twenty billion, eleven million, twenty-two thousand, three hundred thirty-one".