20201231022 has 32 divisors (see below), whose sum is σ = 47156677632. Its totient is φ = 5648975904.

The previous prime is 20201231009. The next prime is 20201231093. The reversal of 20201231022 is 22013210202.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 20201230992 and 20201231010.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5114853 + ... + 5118800.

It is an arithmetic number, because the mean of its divisors is an integer number (1473646176).

Almost surely, 2^20201231022 is an apocalyptic number.

20201231022 is an abundant number, since it is smaller than the sum of its proper divisors (26955446610).

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

20201231022 is a wasteful number, since it uses less digits than its factorization.

20201231022 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10233712.

The product of its (nonzero) digits is 96, while the sum is 15.

Adding to 20201231022 its reverse (22013210202), we get a palindrome (42214441224).

The spelling of 20201231022 in words is "twenty billion, two hundred one million, two hundred thirty-one thousand, twenty-two".