23345432115221 has 4 divisors (see below), whose sum is σ = 23345446309344. Its totient is φ = 23345417921100.

The previous prime is 23345432115179. The next prime is 23345432115281. The reversal of 23345432115221 is 12251123454332.

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 23345432115221 - 2⁴² = 18947385604117 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 (23345432115281) 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, 4248995 + ... + 8046416.

It is an arithmetic number, because the mean of its divisors is an integer number (5836361577336).

Almost surely, 2^{23345432115221} is an apocalyptic number.

It is an amenable number.

23345432115221 is a deficient number, since it is larger than the sum of its proper divisors (14194123).

23345432115221 is a wasteful number, since it uses less digits than its factorization.

23345432115221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14194122.

The product of its digits is 172800, while the sum is 38.

Adding to 23345432115221 its reverse (12251123454332), we get a palindrome (35596555569553).

The spelling of 23345432115221 in words is "twenty-three trillion, three hundred forty-five billion, four hundred thirty-two million, one hundred fifteen thousand, two hundred twenty-one".