22415121 has 12 divisors (see below), whose sum is σ = 32908980. Its totient is φ = 14698080.

The previous prime is 22415101. The next prime is 22415123. The reversal of 22415121 is 12151422.

It can be written as a sum of positive squares in 2 ways, for example, as 12680721 + 9734400 = 3561^2 + 3120^2 .

It is not a de Polignac number, because 22415121 - 2¹⁰ = 22414097 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 22415094 and 22415103.

It is not an unprimeable number, because it can be changed into a prime (22415123) 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, 19866 + ... + 20963.

It is an arithmetic number, because the mean of its divisors is an integer number (2742415).

Almost surely, 2^22415121 is an apocalyptic number.

It is an amenable number.

22415121 is a deficient number, since it is larger than the sum of its proper divisors (10493859).

22415121 is a wasteful number, since it uses less digits than its factorization.

22415121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40896 (or 40893 counting only the distinct ones).

The product of its digits is 160, while the sum is 18.

The square root of 22415121 is about 4734.4610041693. The cubic root of 22415121 is about 281.9553648987.

Adding to 22415121 its reverse (12151422), we get a palindrome (34566543).

The spelling of 22415121 in words is "twenty-two million, four hundred fifteen thousand, one hundred twenty-one".