121387272 has 32 divisors (see below), whose sum is σ = 313934400. Its totient is φ = 39066944.

The previous prime is 121387267. The next prime is 121387283. The reversal of 121387272 is 272783121.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 86508 + ... + 87899.

It is an arithmetic number, because the mean of its divisors is an integer number (9810450).

Almost surely, 2^121387272 is an apocalyptic number.

121387272 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

121387272 is an abundant number, since it is smaller than the sum of its proper divisors (192547128).

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

121387272 is a wasteful number, since it uses less digits than its factorization.

121387272 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 174445 (or 174441 counting only the distinct ones).

The product of its digits is 9408, while the sum is 33.

The square root of 121387272 is about 11017.5892099860. The cubic root of 121387272 is about 495.1358631244.

The spelling of 121387272 in words is "one hundred twenty-one million, three hundred eighty-seven thousand, two hundred seventy-two".