21022022110009 has 4 divisors (see below), whose sum is σ = 21023860192804. Its totient is φ = 21020184027216.

The previous prime is 21022022109937. The next prime is 21022022110081. The reversal of 21022022110009 is 90001122022012.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (21022022109937) and next prime (21022022110081).

It can be written as a sum of positive squares in 2 ways, for example, as 3267428605609 + 17754593504400 = 1807603^2 + 4213620^2 .

It is a cyclic number.

It is not a de Polignac number, because 21022022110009 - 2²⁵ = 21021988555577 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21022022116009) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 919024242 + ... + 919047115.

It is an arithmetic number, because the mean of its divisors is an integer number (5255965048201).

Almost surely, 2^{21022022110009} is an apocalyptic number.

It is an amenable number.

21022022110009 is a deficient number, since it is larger than the sum of its proper divisors (1838082795).

21022022110009 is a wasteful number, since it uses less digits than its factorization.

21022022110009 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1838082794.

The product of its (nonzero) digits is 288, while the sum is 22.

The spelling of 21022022110009 in words is "twenty-one trillion, twenty-two billion, twenty-two million, one hundred ten thousand, nine".