121519272 has 64 divisors (see below), whose sum is σ = 350824320. Its totient is φ = 34357248.

The previous prime is 121519249. The next prime is 121519273. The reversal of 121519272 is 272915121.

It is not an unprimeable number, because it can be changed into a prime (121519273) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 12568 + ... + 20024.

It is an arithmetic number, because the mean of its divisors is an integer number (5481630).

Almost surely, 2^121519272 is an apocalyptic number.

121519272 is a gapful number since it is divisible by the number (12) 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 121519272, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (175412160).

121519272 is an abundant number, since it is smaller than the sum of its proper divisors (229305048).

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

121519272 is a wasteful number, since it uses less digits than its factorization.

121519272 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7570 (or 7566 counting only the distinct ones).

The product of its digits is 2520, while the sum is 30.

The square root of 121519272 is about 11023.5780035341. The cubic root of 121519272 is about 495.3152730863.

The spelling of 121519272 in words is "one hundred twenty-one million, five hundred nineteen thousand, two hundred seventy-two".