22001104021 has 8 divisors (see below), whose sum is σ = 24333861944. Its totient is φ = 19759826880.

The previous prime is 22001103977. The next prime is 22001104031. The reversal of 22001104021 is 12040110022.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 160402225 + 21840701796 = 12665^2 + 147786^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 22001104021 - 2²⁵ = 21967549589 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (13).

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 22001103992 and 22001104010.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22001104031) 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 7 ways as a sum of consecutive naturals, for example, 22869690 + ... + 22870651.

It is an arithmetic number, because the mean of its divisors is an integer number (3041732743).

Almost surely, 2^22001104021 is an apocalyptic number.

It is an amenable number.

22001104021 is a deficient number, since it is larger than the sum of its proper divisors (2332757923).

22001104021 is a wasteful number, since it uses less digits than its factorization.

22001104021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45740391.

The product of its (nonzero) digits is 32, while the sum is 13.

Adding to 22001104021 its reverse (12040110022), we get a palindrome (34041214043).

The spelling of 22001104021 in words is "twenty-two billion, one million, one hundred four thousand, twenty-one".