22233432121 has 4 divisors (see below), whose sum is σ = 22305854032. Its totient is φ = 22161010212.

The previous prime is 22233432119. The next prime is 22233432139. The reversal of 22233432121 is 12123433222.

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 22233432121 - 2¹ = 22233432119 is a prime.

It is a super-2 number, since 2×22233432121² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (22233412121) 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, 36210495 + ... + 36211108.

It is an arithmetic number, because the mean of its divisors is an integer number (5576463508).

Almost surely, 2^22233432121 is an apocalyptic number.

It is an amenable number.

22233432121 is a deficient number, since it is larger than the sum of its proper divisors (72421911).

22233432121 is an equidigital number, since it uses as much as digits as its factorization.

22233432121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 72421910.

The product of its digits is 3456, while the sum is 25.

Adding to 22233432121 its reverse (12123433222), we get a palindrome (34356865343).

The spelling of 22233432121 in words is "twenty-two billion, two hundred thirty-three million, four hundred thirty-two thousand, one hundred twenty-one".