124420019121 has 12 divisors (see below), whose sum is σ = 189176637520. Its totient is φ = 78581064600.

The previous prime is 124420019071. The next prime is 124420019149. The reversal of 124420019121 is 121910024421.

It is a happy number.

124420019121 is a `hidden beast` number, since 12 + 442 + 0 + 0 + 191 + 21 = 666.

It is not a de Polignac number, because 124420019121 - 2⁹ = 124420018609 is a prime.

It is a super-2 number, since 2×124420019121² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (124420019821) 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, 363801055 + ... + 363801396.

Almost surely, 2^124420019121 is an apocalyptic number.

It is an amenable number.

124420019121 is a deficient number, since it is larger than the sum of its proper divisors (64756618399).

124420019121 is a wasteful number, since it uses less digits than its factorization.

124420019121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 727602476 (or 727602473 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 27.

The spelling of 124420019121 in words is "one hundred twenty-four billion, four hundred twenty million, nineteen thousand, one hundred twenty-one".