121255224 has 16 divisors (see below), whose sum is σ = 303138120. Its totient is φ = 40418400.

The previous prime is 121255223. The next prime is 121255231. The reversal of 121255224 is 422552121.

It is a Harshad number since it is a multiple of its sum of digits (24), and also a Moran number because the ratio is a prime number: 5052301 = 121255224 / (1 + 2 + 1 + 2 + 5 + 5 + 2 + 2 + 4).

It is a junction number, because it is equal to n+sod(n) for n = 121255194 and 121255203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121255223) 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, 2526127 + ... + 2526174.

Almost surely, 2^121255224 is an apocalyptic number.

It is an amenable number.

121255224 is an abundant number, since it is smaller than the sum of its proper divisors (181882896).

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

121255224 is a wasteful number, since it uses less digits than its factorization.

121255224 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5052310 (or 5052306 counting only the distinct ones).

The product of its digits is 1600, while the sum is 24.

The square root of 121255224 is about 11011.5949798383. The cubic root of 121255224 is about 494.9562577406.

The spelling of 121255224 in words is "one hundred twenty-one million, two hundred fifty-five thousand, two hundred twenty-four".