22488121 has 2 divisors, whose sum is σ = 22488122. Its totient is φ = 22488120.

The previous prime is 22488101. The next prime is 22488143. The reversal of 22488121 is 12188422.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 15492096 + 6996025 = 3936^2 + 2645^2 .

It is a cyclic number.

It is not a de Polignac number, because 22488121 - 2¹⁹ = 21963833 is a prime.

It is a super-2 number, since 2×22488121² = 1011431172221282, which contains 22 as substring.

It is equal to p_1417951 and since 22488121 and 1417951 have the same sum of digits, it is a Honaker prime.

It is a self number, because there is not a number n which added to its sum of digits gives 22488121.

It is not a weakly prime, because it can be changed into another prime (22488101) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11244060 + 11244061.

It is an arithmetic number, because the mean of its divisors is an integer number (11244061).

Almost surely, 2^22488121 is an apocalyptic number.

It is an amenable number.

22488121 is a deficient number, since it is larger than the sum of its proper divisors (1).

22488121 is an equidigital number, since it uses as much as digits as its factorization.

22488121 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2048, while the sum is 28.

The square root of 22488121 is about 4742.1641683940. The cubic root of 22488121 is about 282.2611173984.

The spelling of 22488121 in words is "twenty-two million, four hundred eighty-eight thousand, one hundred twenty-one".