20012313222 has 32 divisors (see below), whose sum is σ = 48514700160. Its totient is φ = 6064337160.

The previous prime is 20012313199. The next prime is 20012313227. The reversal of 20012313222 is 22231321002.

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 = 20012313195 and 20012313204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20012313227) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 16844788 + ... + 16845975.

It is an arithmetic number, because the mean of its divisors is an integer number (1516084380).

Almost surely, 2^20012313222 is an apocalyptic number.

20012313222 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

20012313222 is an abundant number, since it is smaller than the sum of its proper divisors (28502386938).

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

20012313222 is a wasteful number, since it uses less digits than its factorization.

20012313222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33690785 (or 33690779 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 18.

Adding to 20012313222 its reverse (22231321002), we get a palindrome (42243634224).

The spelling of 20012313222 in words is "twenty billion, twelve million, three hundred thirteen thousand, two hundred twenty-two".