22401111421 has 16 divisors (see below), whose sum is σ = 24394467328. Its totient is φ = 20446732800.

The previous prime is 22401111373. The next prime is 22401111431. The reversal of 22401111421 is 12411110422.

It is a happy number.

It is not a de Polignac number, because 22401111421 - 2¹³ = 22401103229 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22401111431) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1545076 + ... + 1559506.

It is an arithmetic number, because the mean of its divisors is an integer number (1524654208).

Almost surely, 2^22401111421 is an apocalyptic number.

It is an amenable number.

22401111421 is a deficient number, since it is larger than the sum of its proper divisors (1993355907).

22401111421 is a wasteful number, since it uses less digits than its factorization.

22401111421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15772.

The product of its (nonzero) digits is 128, while the sum is 19.

Adding to 22401111421 its reverse (12411110422), we get a palindrome (34812221843).

Subtracting from 22401111421 its reverse (12411110422), we obtain a palindrome (9990000999).

The spelling of 22401111421 in words is "twenty-two billion, four hundred one million, one hundred eleven thousand, four hundred twenty-one".