20312222000 has 80 divisors (see below), whose sum is σ = 56131413312. Its totient is φ = 6964185600.

The previous prime is 20312221921. The next prime is 20312222027. The reversal of 20312222000 is 22221302.

It is a tau number, because it is divible by the number of its divisors (80).

It is a Harshad number since it is a multiple of its sum of digits (14).

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, 711437 + ... + 739436.

Almost surely, 2^20312222000 is an apocalyptic number.

20312222000 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20312222000 is an abundant number, since it is smaller than the sum of its proper divisors (35819191312).

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

20312222000 is a wasteful number, since it uses less digits than its factorization.

20312222000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1450903 (or 1450887 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 14.

Adding to 20312222000 its reverse (22221302), we get a palindrome (20334443302).

The spelling of 20312222000 in words is "twenty billion, three hundred twelve million, two hundred twenty-two thousand".