121321288 has 32 divisors (see below), whose sum is σ = 253445760. Its totient is φ = 53970880.

The previous prime is 121321283. The next prime is 121321307. The reversal of 121321288 is 882123121.

It is not an unprimeable number, because it can be changed into a prime (121321283) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10531 + ... + 18802.

It is an arithmetic number, because the mean of its divisors is an integer number (7920180).

Almost surely, 2^121321288 is an apocalyptic number.

It is an amenable number.

121321288 is an abundant number, since it is smaller than the sum of its proper divisors (132124472).

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

121321288 is a wasteful number, since it uses less digits than its factorization.

121321288 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29397 (or 29393 counting only the distinct ones).

The product of its digits is 1536, while the sum is 28.

The square root of 121321288 is about 11014.5943184486. The cubic root of 121321288 is about 495.0461311291.

The spelling of 121321288 in words is "one hundred twenty-one million, three hundred twenty-one thousand, two hundred eighty-eight".