121220124 has 48 divisors (see below), whose sum is σ = 287659008. Its totient is φ = 39725568.

The previous prime is 121220117. The next prime is 121220147. The reversal of 121220124 is 421022121.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 259339 + ... + 259805.

It is an arithmetic number, because the mean of its divisors is an integer number (5992896).

Almost surely, 2^121220124 is an apocalyptic number.

It is an amenable number.

121220124 is an abundant number, since it is smaller than the sum of its proper divisors (166438884).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

121220124 is a wasteful number, since it uses less digits than its factorization.

121220124 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 794 (or 792 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 15.

The square root of 121220124 is about 11010.0010899182. The cubic root of 121220124 is about 494.9084944617.

Adding to 121220124 its reverse (421022121), we get a palindrome (542242245).

The spelling of 121220124 in words is "one hundred twenty-one million, two hundred twenty thousand, one hundred twenty-four".