22103432121 has 4 divisors (see below), whose sum is σ = 29471242832. Its totient is φ = 14735621412.

The previous prime is 22103432107. The next prime is 22103432123. The reversal of 22103432121 is 12123430122.

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 not a de Polignac number, because 22103432121 - 2²² = 22099237817 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (22103432123) 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, 3683905351 + ... + 3683905356.

It is an arithmetic number, because the mean of its divisors is an integer number (7367810708).

Almost surely, 2^22103432121 is an apocalyptic number.

It is an amenable number.

22103432121 is a deficient number, since it is larger than the sum of its proper divisors (7367810711).

22103432121 is an equidigital number, since it uses as much as digits as its factorization.

22103432121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7367810710.

The product of its (nonzero) digits is 576, while the sum is 21.

Adding to 22103432121 its reverse (12123430122), we get a palindrome (34226862243).

The spelling of 22103432121 in words is "twenty-two billion, one hundred three million, four hundred thirty-two thousand, one hundred twenty-one".