121097256 has 128 divisors (see below), whose sum is σ = 370656000. Its totient is φ = 32182272.

The previous prime is 121097233. The next prime is 121097257. The reversal of 121097256 is 652790121.

It is not an unprimeable number, because it can be changed into a prime (121097257) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 311110 + ... + 311498.

It is an arithmetic number, because the mean of its divisors is an integer number (2895750).

Almost surely, 2^121097256 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 121097256, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (185328000).

121097256 is an abundant number, since it is smaller than the sum of its proper divisors (249558744).

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

121097256 is a wasteful number, since it uses less digits than its factorization.

121097256 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 531 (or 527 counting only the distinct ones).

The product of its (nonzero) digits is 7560, while the sum is 33.

The square root of 121097256 is about 11004.4198393191. The cubic root of 121097256 is about 494.7412258282.

The spelling of 121097256 in words is "one hundred twenty-one million, ninety-seven thousand, two hundred fifty-six".