22222132401 has 32 divisors (see below), whose sum is σ = 35433739008. Its totient is φ = 12122023680.

The previous prime is 22222132399. The next prime is 22222132417. The reversal of 22222132401 is 10423122222.

It is not a de Polignac number, because 22222132401 - 2¹ = 22222132399 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (22222132421) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 228630 + ... + 310991.

It is an arithmetic number, because the mean of its divisors is an integer number (1107304344).

Almost surely, 2^22222132401 is an apocalyptic number.

22222132401 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

22222132401 is a deficient number, since it is larger than the sum of its proper divisors (13211606607).

22222132401 is a wasteful number, since it uses less digits than its factorization.

22222132401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 539721.

The product of its (nonzero) digits is 768, while the sum is 21.

Adding to 22222132401 its reverse (10423122222), we get a palindrome (32645254623).

The spelling of 22222132401 in words is "twenty-two billion, two hundred twenty-two million, one hundred thirty-two thousand, four hundred one".