20202221001 has 16 divisors (see below), whose sum is σ = 27670107968. Its totient is φ = 13101393600.

The previous prime is 20202220967. The next prime is 20202221027. The reversal of 20202221001 is 10012220202.

It is not a de Polignac number, because 20202221001 - 2²² = 20198026697 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20202221041) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 603186 + ... + 635796.

It is an arithmetic number, because the mean of its divisors is an integer number (1729381748).

Almost surely, 2^20202221001 is an apocalyptic number.

It is an amenable number.

20202221001 is a deficient number, since it is larger than the sum of its proper divisors (7467886967).

20202221001 is a wasteful number, since it uses less digits than its factorization.

20202221001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38232.

The product of its (nonzero) digits is 32, while the sum is 12.

Adding to 20202221001 its reverse (10012220202), we get a palindrome (30214441203).

The spelling of 20202221001 in words is "twenty billion, two hundred two million, two hundred twenty-one thousand, one".