22113121 has 2 divisors, whose sum is σ = 22113122. Its totient is φ = 22113120.

The previous prime is 22113103. The next prime is 22113151. The reversal of 22113121 is 12131122.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 17338896 + 4774225 = 4164^2 + 2185^2 .

It is a cyclic number.

It is not a de Polignac number, because 22113121 - 2⁵ = 22113089 is a prime.

It is not a weakly prime, because it can be changed into another prime (22113101) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11056560 + 11056561.

It is an arithmetic number, because the mean of its divisors is an integer number (11056561).

Almost surely, 2^22113121 is an apocalyptic number.

It is an amenable number.

22113121 is a deficient number, since it is larger than the sum of its proper divisors (1).

22113121 is an equidigital number, since it uses as much as digits as its factorization.

22113121 is an evil number, because the sum of its binary digits is even.

The product of its digits is 24, while the sum is 13.

The square root of 22113121 is about 4702.4590375675. The cubic root of 22113121 is about 280.6833690753.

Adding to 22113121 its reverse (12131122), we get a palindrome (34244243).

The spelling of 22113121 in words is "twenty-two million, one hundred thirteen thousand, one hundred twenty-one".