124320202221 has 4 divisors (see below), whose sum is σ = 165760269632. Its totient is φ = 82880134812.

The previous prime is 124320202213. The next prime is 124320202247. The reversal of 124320202221 is 122202023421.

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 not a de Polignac number, because 124320202221 - 2³ = 124320202213 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 (124320202271) 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, 20720033701 + ... + 20720033706.

It is an arithmetic number, because the mean of its divisors is an integer number (41440067408).

Almost surely, 2^124320202221 is an apocalyptic number.

It is an amenable number.

124320202221 is a deficient number, since it is larger than the sum of its proper divisors (41440067411).

124320202221 is an equidigital number, since it uses as much as digits as its factorization.

124320202221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41440067410.

The product of its (nonzero) digits is 768, while the sum is 21.

Adding to 124320202221 its reverse (122202023421), we get a palindrome (246522225642).

The spelling of 124320202221 in words is "one hundred twenty-four billion, three hundred twenty million, two hundred two thousand, two hundred twenty-one".