124216253221 has 16 divisors (see below), whose sum is σ = 128942755200. Its totient is φ = 119568312000.

The previous prime is 124216253209. The next prime is 124216253257. The reversal of 124216253221 is 122352612421.

It is a happy number.

It is not a de Polignac number, because 124216253221 - 2²⁵ = 124182698789 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 (124216253921) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1338880 + ... + 1428646.

It is an arithmetic number, because the mean of its divisors is an integer number (8058922200).

Almost surely, 2^124216253221 is an apocalyptic number.

It is an amenable number.

124216253221 is a deficient number, since it is larger than the sum of its proper divisors (4726501979).

124216253221 is a wasteful number, since it uses less digits than its factorization.

124216253221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 90204.

The product of its digits is 11520, while the sum is 31.

Adding to 124216253221 its reverse (122352612421), we get a palindrome (246568865642).

The spelling of 124216253221 in words is "one hundred twenty-four billion, two hundred sixteen million, two hundred fifty-three thousand, two hundred twenty-one".