121980697 has 4 divisors (see below), whose sum is σ = 122043600. Its totient is φ = 121917796.

The previous prime is 121980689. The next prime is 121980713. The reversal of 121980697 is 796089121.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 121980697 - 2³ = 121980689 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (121980647) 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 3 ways as a sum of consecutive naturals, for example, 28447 + ... + 32452.

It is an arithmetic number, because the mean of its divisors is an integer number (30510900).

Almost surely, 2^121980697 is an apocalyptic number.

It is an amenable number.

121980697 is a deficient number, since it is larger than the sum of its proper divisors (62903).

121980697 is an equidigital number, since it uses as much as digits as its factorization.

121980697 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 62902.

The product of its (nonzero) digits is 54432, while the sum is 43.

The square root of 121980697 is about 11044.4871768679. The cubic root of 121980697 is about 495.9414074583.

The spelling of 121980697 in words is "one hundred twenty-one million, nine hundred eighty thousand, six hundred ninety-seven".