22000202001 has 6 divisors (see below), whose sum is σ = 31778069570. Its totient is φ = 14666801328.

The previous prime is 22000201987. The next prime is 22000202017. The reversal of 22000202001 is 10020200022.

It can be written as a sum of positive squares in only one way, i.e., 20678152401 + 1322049600 = 143799^2 + 36360^2 .

It is not a de Polignac number, because 22000202001 - 2¹⁰ = 22000200977 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: 2444466889 = 22000202001 / (2 + 2 + 0 + 0 + 0 + 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 (22000202801) 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, 1222233436 + ... + 1222233453.

Almost surely, 2^22000202001 is an apocalyptic number.

It is an amenable number.

22000202001 is a deficient number, since it is larger than the sum of its proper divisors (9777867569).

22000202001 is a wasteful number, since it uses less digits than its factorization.

22000202001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2444466895 (or 2444466892 counting only the distinct ones).

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

Adding to 22000202001 its reverse (10020200022), we get a palindrome (32020402023).

The spelling of 22000202001 in words is "twenty-two billion, two hundred two thousand, one".