20002202001 has 6 divisors (see below), whose sum is σ = 28892069570. Its totient is φ = 13334801328.

The previous prime is 20002201963. The next prime is 20002202021. The reversal of 20002202001 is 10020220002.

It can be written as a sum of positive squares in only one way, i.e., 10201202001 + 9801000000 = 101001^2 + 99000^2 .

It is not a de Polignac number, because 20002202001 - 2²¹ = 20000104849 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (9), and also a Moran number because the ratio is a prime number: 2222466889 = 20002202001 / (2 + 0 + 0 + 0 + 2 + 2 + 0 + 2 + 0 + 0 + 1).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20002202021) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1111233436 + ... + 1111233453.

Almost surely, 2^20002202001 is an apocalyptic number.

It is an amenable number.

20002202001 is a deficient number, since it is larger than the sum of its proper divisors (8889867569).

20002202001 is a wasteful number, since it uses less digits than its factorization.

20002202001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2222466895 (or 2222466892 counting only the distinct ones).

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

Adding to 20002202001 its reverse (10020220002), we get a palindrome (30022422003).

The spelling of 20002202001 in words is "twenty billion, two million, two hundred two thousand, one".