121055130 has 192 divisors, whose sum is σ = 388177920. Its totient is φ = 25546752.

The previous prime is 121055117. The next prime is 121055161. The reversal of 121055130 is 31550121.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 953127 + ... + 953253.

It is an arithmetic number, because the mean of its divisors is an integer number (2021760).

Almost surely, 2^121055130 is an apocalyptic number.

121055130 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 121055130, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (194088960).

121055130 is an abundant number, since it is smaller than the sum of its proper divisors (267122790).

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

121055130 is a wasteful number, since it uses less digits than its factorization.

121055130 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 253 (or 250 counting only the distinct ones).

The product of its (nonzero) digits is 150, while the sum is 18.

The square root of 121055130 is about 11002.5056237204. The cubic root of 121055130 is about 494.6838507708.

The spelling of 121055130 in words is "one hundred twenty-one million, fifty-five thousand, one hundred thirty".