121190550 has 96 divisors (see below), whose sum is σ = 340811520. Its totient is φ = 28252800.

The previous prime is 121190549. The next prime is 121190551. The reversal of 121190550 is 55091121.

It is an interprime number because it is at equal distance from previous prime (121190549) and next prime (121190551).

It is a self number, because there is not a number n which added to its sum of digits gives 121190550.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121190551) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 35415 + ... + 38685.

It is an arithmetic number, because the mean of its divisors is an integer number (3550120).

Almost surely, 2^121190550 is an apocalyptic number.

121190550 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 121190550, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (170405760).

121190550 is an abundant number, since it is smaller than the sum of its proper divisors (219620970).

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

121190550 is a wasteful number, since it uses less digits than its factorization.

121190550 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3318 (or 3313 counting only the distinct ones).

The product of its (nonzero) digits is 450, while the sum is 24.

The square root of 121190550 is about 11008.6579563542. The cubic root of 121190550 is about 494.8682436800.

The spelling of 121190550 in words is "one hundred twenty-one million, one hundred ninety thousand, five hundred fifty".