20220001002 has 40 divisors (see below), whose sum is σ = 45316935972. Its totient is φ = 6738638400.

The previous prime is 20220000973. The next prime is 20220001027. The reversal of 20220001002 is 20010002202.

It can be written as a sum of positive squares in 2 ways, for example, as 19912314321 + 307686681 = 141111^2 + 17541^2 .

It is a Harshad number since it is a multiple of its sum of digits (9).

It is an unprimeable number.

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 19 ways as a sum of consecutive naturals, for example, 1086052 + ... + 1104512.

Almost surely, 2^20220001002 is an apocalyptic number.

20220001002 is an abundant number, since it is smaller than the sum of its proper divisors (25096934970).

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

20220001002 is a wasteful number, since it uses less digits than its factorization.

20220001002 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25236 (or 25227 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 9.

Adding to 20220001002 its reverse (20010002202), we get a palindrome (40230003204).

The spelling of 20220001002 in words is "twenty billion, two hundred twenty million, one thousand, two".