20221010001 has 12 divisors (see below), whose sum is σ = 29608237828. Its totient is φ = 13296006144.

The previous prime is 20221009967. The next prime is 20221010071. The reversal of 20221010001 is 10001012202.

It can be written as a sum of positive squares in 2 ways, for example, as 10221210000 + 9999800001 = 101100^2 + 99999^2 .

It is not a de Polignac number, because 20221010001 - 2¹⁸ = 20220747857 is a prime.

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

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20221010071) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 15388240 + ... + 15389553.

Almost surely, 2^20221010001 is an apocalyptic number.

It is an amenable number.

20221010001 is a deficient number, since it is larger than the sum of its proper divisors (9387227827).

20221010001 is a wasteful number, since it uses less digits than its factorization.

20221010001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30777872 (or 30777869 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 9.

Adding to 20221010001 its reverse (10001012202), we get a palindrome (30222022203).

The spelling of 20221010001 in words is "twenty billion, two hundred twenty-one million, ten thousand, one".