20221000101 has 6 divisors (see below), whose sum is σ = 29208111270. Its totient is φ = 13480666728.

The previous prime is 20221000069. The next prime is 20221000109. The reversal of 20221000101 is 10100012202.

It can be written as a sum of positive squares in only one way, i.e., 11507711076 + 8713289025 = 107274^2 + 93345^2 .

It is not a de Polignac number, because 20221000101 - 2⁵ = 20221000069 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: 2246777789 = 20221000101 / (2 + 0 + 2 + 2 + 1 + 0 + 0 + 0 + 1 + 0 + 1).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20221000109) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1123388886 + ... + 1123388903.

It is an arithmetic number, because the mean of its divisors is an integer number (4868018545).

Almost surely, 2^20221000101 is an apocalyptic number.

It is an amenable number.

20221000101 is a deficient number, since it is larger than the sum of its proper divisors (8987111169).

20221000101 is a wasteful number, since it uses less digits than its factorization.

20221000101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2246777795 (or 2246777792 counting only the distinct ones).

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

Adding to 20221000101 its reverse (10100012202), we get a palindrome (30321012303).

The spelling of 20221000101 in words is "twenty billion, two hundred twenty-one million, one hundred one", and thus it is an aban number.