22421001 has 16 divisors (see below), whose sum is σ = 31134464. Its totient is φ = 14338944.

The previous prime is 22420999. The next prime is 22421023. The reversal of 22421001 is 10012422.

It is not a de Polignac number, because 22421001 - 2¹ = 22420999 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (22421041) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6720 + ... + 9486.

It is an arithmetic number, because the mean of its divisors is an integer number (1945904).

Almost surely, 2^22421001 is an apocalyptic number.

It is an amenable number.

22421001 is a deficient number, since it is larger than the sum of its proper divisors (8713463).

22421001 is a wasteful number, since it uses less digits than its factorization.

22421001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2880.

The product of its (nonzero) digits is 32, while the sum is 12.

The square root of 22421001 is about 4735.0819422688. The cubic root of 22421001 is about 281.9800171948.

Adding to 22421001 its reverse (10012422), we get a palindrome (32433423).

The spelling of 22421001 in words is "twenty-two million, four hundred twenty-one thousand, one".