124244411221 has 12 divisors (see below), whose sum is σ = 144601845132. Its totient is φ = 106441691328.

The previous prime is 124244411197. The next prime is 124244411233. The reversal of 124244411221 is 122114442421.

It can be written as a sum of positive squares in 2 ways, for example, as 37931847121 + 86312564100 = 194761^2 + 293790^2 .

It is not a de Polignac number, because 124244411221 - 2²¹ = 124242314069 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 124244411221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (124244411251) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 538470 + ... + 733783.

It is an arithmetic number, because the mean of its divisors is an integer number (12050153761).

Almost surely, 2^124244411221 is an apocalyptic number.

It is an amenable number.

124244411221 is a deficient number, since it is larger than the sum of its proper divisors (20357433911).

124244411221 is a wasteful number, since it uses less digits than its factorization.

124244411221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1274260 (or 1274253 counting only the distinct ones).

The product of its digits is 4096, while the sum is 28.

Adding to 124244411221 its reverse (122114442421), we get a palindrome (246358853642).

The spelling of 124244411221 in words is "one hundred twenty-four billion, two hundred forty-four million, four hundred eleven thousand, two hundred twenty-one".