124553322121 has 4 divisors (see below), whose sum is σ = 124560191044. Its totient is φ = 124546453200.

The previous prime is 124553322071. The next prime is 124553322191. The reversal of 124553322121 is 121223355421.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 98900815225 + 25652506896 = 314485^2 + 160164^2 .

It is a cyclic number.

It is not a de Polignac number, because 124553322121 - 2¹⁹ = 124552797833 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (124553322191) 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, 3407190 + ... + 3443551.

It is an arithmetic number, because the mean of its divisors is an integer number (31140047761).

Almost surely, 2^124553322121 is an apocalyptic number.

It is an amenable number.

124553322121 is a deficient number, since it is larger than the sum of its proper divisors (6868923).

124553322121 is an equidigital number, since it uses as much as digits as its factorization.

124553322121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6868922.

The product of its digits is 14400, while the sum is 31.

Adding to 124553322121 its reverse (121223355421), we get a palindrome (245776677542).

The spelling of 124553322121 in words is "one hundred twenty-four billion, five hundred fifty-three million, three hundred twenty-two thousand, one hundred twenty-one".