121252160 has 112 divisors (see below), whose sum is σ = 316016640. Its totient is φ = 44113920.

The previous prime is 121252147. The next prime is 121252163. The reversal of 121252160 is 61252121.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121252163) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 168281 + ... + 168999.

Almost surely, 2^121252160 is an apocalyptic number.

121252160 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 121252160, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (158008320).

121252160 is an abundant number, since it is smaller than the sum of its proper divisors (194764480).

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

121252160 is a wasteful number, since it uses less digits than its factorization.

121252160 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 784 (or 774 counting only the distinct ones).

The product of its (nonzero) digits is 240, while the sum is 20.

The square root of 121252160 is about 11011.4558528834. The cubic root of 121252160 is about 494.9520886866.

The spelling of 121252160 in words is "one hundred twenty-one million, two hundred fifty-two thousand, one hundred sixty".