22413421 has 4 divisors (see below), whose sum is σ = 22452192. Its totient is φ = 22374652.

The previous prime is 22413401. The next prime is 22413427. The reversal of 22413421 is 12431422.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 22413421 - 2⁵ = 22413389 is a prime.

It is a super-2 number, since 2×22413421² = 1004722881846482, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22413427) 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, 18505 + ... + 19678.

It is an arithmetic number, because the mean of its divisors is an integer number (5613048).

Almost surely, 2^22413421 is an apocalyptic number.

It is an amenable number.

22413421 is a deficient number, since it is larger than the sum of its proper divisors (38771).

22413421 is an equidigital number, since it uses as much as digits as its factorization.

22413421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38770.

The product of its digits is 384, while the sum is 19.

The square root of 22413421 is about 4734.2814660728. The cubic root of 22413421 is about 281.9482367308.

Adding to 22413421 its reverse (12431422), we get a palindrome (34844843).

The spelling of 22413421 in words is "twenty-two million, four hundred thirteen thousand, four hundred twenty-one".