20312222022 has 24 divisors (see below), whose sum is σ = 44233222176. Its totient is φ = 6736370256.

The previous prime is 20312221921. The next prime is 20312222027. The reversal of 20312222022 is 22022221302.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 20312221986 and 20312222004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20312222027) 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 11 ways as a sum of consecutive naturals, for example, 2860558 + ... + 2867649.

It is an arithmetic number, because the mean of its divisors is an integer number (1843050924).

Almost surely, 2^20312222022 is an apocalyptic number.

20312222022 is an abundant number, since it is smaller than the sum of its proper divisors (23921000154).

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

20312222022 is a wasteful number, since it uses less digits than its factorization.

20312222022 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5728412 (or 5728409 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 18.

Adding to 20312222022 its reverse (22022221302), we get a palindrome (42334443324).

The spelling of 20312222022 in words is "twenty billion, three hundred twelve million, two hundred twenty-two thousand, twenty-two".