23221211513 has 8 divisors (see below), whose sum is σ = 24449088000. Its totient is φ = 21993905808.

The previous prime is 23221211491. The next prime is 23221211543. The reversal of 23221211513 is 31511212232.

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

It is a cyclic number.

It is not a de Polignac number, because 23221211513 - 2⁶ = 23221211449 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (23221211543) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 57881 + ... + 223142.

It is an arithmetic number, because the mean of its divisors is an integer number (3056136000).

Almost surely, 2^23221211513 is an apocalyptic number.

It is an amenable number.

23221211513 is a deficient number, since it is larger than the sum of its proper divisors (1227876487).

23221211513 is a wasteful number, since it uses less digits than its factorization.

23221211513 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 285391.

The product of its digits is 720, while the sum is 23.

Adding to 23221211513 its reverse (31511212232), we get a palindrome (54732423745).

The spelling of 23221211513 in words is "twenty-three billion, two hundred twenty-one million, two hundred eleven thousand, five hundred thirteen".