20222221012 has 36 divisors (see below), whose sum is σ = 41181588000. Its totient is φ = 8663524464.

The previous prime is 20222221001. The next prime is 20222221039. The reversal of 20222221012 is 21012222202.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 570603 + ... + 605005.

It is an arithmetic number, because the mean of its divisors is an integer number (1143933000).

Almost surely, 2^20222221012 is an apocalyptic number.

It is an amenable number.

20222221012 is an abundant number, since it is smaller than the sum of its proper divisors (20959366988).

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

20222221012 is a wasteful number, since it uses less digits than its factorization.

20222221012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37420 (or 37411 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 16.

Adding to 20222221012 its reverse (21012222202), we get a palindrome (41234443214).

The spelling of 20222221012 in words is "twenty billion, two hundred twenty-two million, two hundred twenty-one thousand, twelve".