20002220001 has 32 divisors (see below), whose sum is σ = 30347243520. Its totient is φ = 13013883792.

The previous prime is 20002219969. The next prime is 20002220057. The reversal of 20002220001 is 10002220002.

It is not a de Polignac number, because 20002220001 - 2⁵ = 20002219969 is a prime.

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

It is not an unprimeable number, because it can be changed into a prime (20002220081) 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 31 ways as a sum of consecutive naturals, for example, 1534156 + ... + 1547138.

It is an arithmetic number, because the mean of its divisors is an integer number (948351360).

Almost surely, 2^20002220001 is an apocalyptic number.

It is an amenable number.

20002220001 is a deficient number, since it is larger than the sum of its proper divisors (10345023519).

20002220001 is a wasteful number, since it uses less digits than its factorization.

20002220001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14362 (or 14356 counting only the distinct ones).

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

Adding to 20002220001 its reverse (10002220002), we get a palindrome (30004440003).

Subtracting from 20002220001 its reverse (10002220002), we obtain a palindrome (9999999999).

The spelling of 20002220001 in words is "twenty billion, two million, two hundred twenty thousand, one".