22421401 has 4 divisors (see below), whose sum is σ = 23144704. Its totient is φ = 21698100.

The previous prime is 22421393. The next prime is 22421411. The reversal of 22421401 is 10412422.

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 22421401 - 2³ = 22421393 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (22421411) 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, 361605 + ... + 361666.

It is an arithmetic number, because the mean of its divisors is an integer number (5786176).

Almost surely, 2^22421401 is an apocalyptic number.

It is an amenable number.

22421401 is a deficient number, since it is larger than the sum of its proper divisors (723303).

22421401 is an equidigital number, since it uses as much as digits as its factorization.

22421401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 723302.

The product of its (nonzero) digits is 128, while the sum is 16.

The square root of 22421401 is about 4735.1241799978. The cubic root of 22421401 is about 281.9816940651.

Adding to 22421401 its reverse (10412422), we get a palindrome (32833823).

It can be divided in two parts, 22421 and 401, that added together give a palindrome (22822).

The spelling of 22421401 in words is "twenty-two million, four hundred twenty-one thousand, four hundred one".