22413121 has 4 divisors (see below), whose sum is σ = 22440132. Its totient is φ = 22386112.

The previous prime is 22413113. The next prime is 22413133. The reversal of 22413121 is 12131422.

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 12173121 + 10240000 = 3489^2 + 3200^2 .

It is a cyclic number.

It is not a de Polignac number, because 22413121 - 2³ = 22413113 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 22413095 and 22413104.

It is not an unprimeable number, because it can be changed into a prime (22413151) 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, 12220 + ... + 13933.

It is an arithmetic number, because the mean of its divisors is an integer number (5610033).

Almost surely, 2^22413121 is an apocalyptic number.

It is an amenable number.

22413121 is a deficient number, since it is larger than the sum of its proper divisors (27011).

22413121 is an equidigital number, since it uses as much as digits as its factorization.

22413121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27010.

The product of its digits is 96, while the sum is 16.

The square root of 22413121 is about 4734.2497821725. The cubic root of 22413121 is about 281.9469787814.

Adding to 22413121 its reverse (12131422), we get a palindrome (34544543).

The spelling of 22413121 in words is "twenty-two million, four hundred thirteen thousand, one hundred twenty-one".