121255102 has 16 divisors (see below), whose sum is σ = 185309280. Its totient is φ = 59496192.

The previous prime is 121255097. The next prime is 121255109. The reversal of 121255102 is 201552121.

It is a super-2 number, since 2×121255102² = 29405599522060808, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 121255102.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121255109) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 20674 + ... + 25882.

It is an arithmetic number, because the mean of its divisors is an integer number (11581830).

Almost surely, 2^121255102 is an apocalyptic number.

121255102 is a deficient number, since it is larger than the sum of its proper divisors (64054178).

121255102 is a wasteful number, since it uses less digits than its factorization.

121255102 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5427.

The product of its (nonzero) digits is 200, while the sum is 19.

The square root of 121255102 is about 11011.5894402216. The cubic root of 121255102 is about 494.9560917418.

The spelling of 121255102 in words is "one hundred twenty-one million, two hundred fifty-five thousand, one hundred two".