22052413021 has 4 divisors (see below), whose sum is σ = 22055734332. Its totient is φ = 22049091712.

The previous prime is 22052413007. The next prime is 22052413027. The reversal of 22052413021 is 12031425022.

It is a happy number.

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

It can be written as a sum of positive squares in 2 ways, for example, as 4460369796 + 17592043225 = 66786^2 + 132635^2 .

It is a cyclic number.

It is not a de Polignac number, because 22052413021 - 2⁵ = 22052412989 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 22052412983 and 22052413001.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22052413027) 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, 1650676 + ... + 1663981.

It is an arithmetic number, because the mean of its divisors is an integer number (5513933583).

Almost surely, 2^22052413021 is an apocalyptic number.

It is an amenable number.

22052413021 is a deficient number, since it is larger than the sum of its proper divisors (3321311).

22052413021 is an equidigital number, since it uses as much as digits as its factorization.

22052413021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3321310.

The product of its (nonzero) digits is 960, while the sum is 22.

Adding to 22052413021 its reverse (12031425022), we get a palindrome (34083838043).

The spelling of 22052413021 in words is "twenty-two billion, fifty-two million, four hundred thirteen thousand, twenty-one".