23433422221 has 4 divisors (see below), whose sum is σ = 25563733344. Its totient is φ = 21303111100.

The previous prime is 23433422219. The next prime is 23433422227. The reversal of 23433422221 is 12222433432.

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 23433422221 - 2¹ = 23433422219 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 23433422221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23433422227) 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, 1065155545 + ... + 1065155566.

It is an arithmetic number, because the mean of its divisors is an integer number (6390933336).

Almost surely, 2^23433422221 is an apocalyptic number.

It is an amenable number.

23433422221 is a deficient number, since it is larger than the sum of its proper divisors (2130311123).

23433422221 is a wasteful number, since it uses less digits than its factorization.

23433422221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2130311122.

The product of its digits is 13824, while the sum is 28.

Adding to 23433422221 its reverse (12222433432), we get a palindrome (35655855653).

The spelling of 23433422221 in words is "twenty-three billion, four hundred thirty-three million, four hundred twenty-two thousand, two hundred twenty-one".