20202221985 has 32 divisors (see below), whose sum is σ = 35531274240. Its totient is φ = 9720235200.

The previous prime is 20202221939. The next prime is 20202221989. The reversal of 20202221985 is 58912220202.

It is not a de Polignac number, because 20202221985 - 2⁷ = 20202221857 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is not an unprimeable number, because it can be changed into a prime (20202221989) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 445705 + ... + 488934.

It is an arithmetic number, because the mean of its divisors is an integer number (1110352320).

Almost surely, 2^20202221985 is an apocalyptic number.

It is an amenable number.

20202221985 is a deficient number, since it is larger than the sum of its proper divisors (15329052255).

20202221985 is a wasteful number, since it uses less digits than its factorization.

20202221985 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 934789.

The product of its (nonzero) digits is 11520, while the sum is 33.

The spelling of 20202221985 in words is "twenty billion, two hundred two million, two hundred twenty-one thousand, nine hundred eighty-five".