121197321 has 24 divisors (see below), whose sum is σ = 206529024. Its totient is φ = 67020480.

The previous prime is 121197317. The next prime is 121197337. The reversal of 121197321 is 123791121.

It is not a de Polignac number, because 121197321 - 2² = 121197317 is a prime.

It is not an unprimeable number, because it can be changed into a prime (121197341) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 29076 + ... + 32981.

It is an arithmetic number, because the mean of its divisors is an integer number (8605376).

Almost surely, 2^121197321 is an apocalyptic number.

It is an amenable number.

121197321 is a deficient number, since it is larger than the sum of its proper divisors (85331703).

121197321 is a wasteful number, since it uses less digits than its factorization.

121197321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 62101 (or 62098 counting only the distinct ones).

The product of its digits is 756, while the sum is 27.

The square root of 121197321 is about 11008.9654827327. The cubic root of 121197321 is about 494.8774597189.

The spelling of 121197321 in words is "one hundred twenty-one million, one hundred ninety-seven thousand, three hundred twenty-one".