22453121 has 4 divisors (see below), whose sum is σ = 22760772. Its totient is φ = 22145472.

The previous prime is 22453103. The next prime is 22453127. The reversal of 22453121 is 12135422.

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 8202496 + 14250625 = 2864^2 + 3775^2 .

It is a cyclic number.

It is not a de Polignac number, because 22453121 - 2¹⁰ = 22452097 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 22453093 and 22453102.

It is not an unprimeable number, because it can be changed into a prime (22453127) 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, 153716 + ... + 153861.

It is an arithmetic number, because the mean of its divisors is an integer number (5690193).

Almost surely, 2^22453121 is an apocalyptic number.

It is an amenable number.

22453121 is a deficient number, since it is larger than the sum of its proper divisors (307651).

22453121 is an equidigital number, since it uses as much as digits as its factorization.

22453121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 307650.

The product of its digits is 480, while the sum is 20.

The square root of 22453121 is about 4738.4724331793. The cubic root of 22453121 is about 282.1146064358.

Adding to 22453121 its reverse (12135422), we get a palindrome (34588543).

The spelling of 22453121 in words is "twenty-two million, four hundred fifty-three thousand, one hundred twenty-one".