23421221242511 has 8 divisors (see below), whose sum is σ = 24731689712880. Its totient is φ = 22118530033728.

The previous prime is 23421221242483. The next prime is 23421221242513. The reversal of 23421221242511 is 11524212212432.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-23421221242511 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 (23421221242513) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1944309206 + ... + 1944321251.

It is an arithmetic number, because the mean of its divisors is an integer number (3091461214110).

Almost surely, 2^{23421221242511} is an apocalyptic number.

23421221242511 is a deficient number, since it is larger than the sum of its proper divisors (1310468470369).

23421221242511 is a wasteful number, since it uses less digits than its factorization.

23421221242511 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3888630793.

The product of its digits is 15360, while the sum is 32.

Adding to 23421221242511 its reverse (11524212212432), we get a palindrome (34945433454943).

The spelling of 23421221242511 in words is "twenty-three trillion, four hundred twenty-one billion, two hundred twenty-one million, two hundred forty-two thousand, five hundred eleven".