124442221121 has 4 divisors (see below), whose sum is σ = 124449546672. Its totient is φ = 124434895572.

The previous prime is 124442221103. The next prime is 124442221133. The reversal of 124442221121 is 121122244421.

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, and also an emirpimes, since its reverse is a distinct semiprime: 121122244421 = 13877 ⋅8728273.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-124442221121 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (124442221171) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3637235 + ... + 3671288.

It is an arithmetic number, because the mean of its divisors is an integer number (31112386668).

Almost surely, 2^124442221121 is an apocalyptic number.

It is an amenable number.

124442221121 is a deficient number, since it is larger than the sum of its proper divisors (7325551).

124442221121 is an equidigital number, since it uses as much as digits as its factorization.

124442221121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7325550.

The product of its digits is 2048, while the sum is 26.

Adding to 124442221121 its reverse (121122244421), we get a palindrome (245564465542).

The spelling of 124442221121 in words is "one hundred twenty-four billion, four hundred forty-two million, two hundred twenty-one thousand, one hundred twenty-one".