121980266 has 32 divisors (see below), whose sum is σ = 196992000. Its totient is φ = 56480112.

The previous prime is 121980263. The next prime is 121980311. The reversal of 121980266 is 662089121.

It is not an unprimeable number, because it can be changed into a prime (121980263) 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 15 ways as a sum of consecutive naturals, for example, 537245 + ... + 537471.

It is an arithmetic number, because the mean of its divisors is an integer number (6156000).

Almost surely, 2^121980266 is an apocalyptic number.

121980266 is a deficient number, since it is larger than the sum of its proper divisors (75011734).

121980266 is a wasteful number, since it uses less digits than its factorization.

121980266 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 506.

The product of its (nonzero) digits is 10368, while the sum is 35.

The square root of 121980266 is about 11044.4676648537. The cubic root of 121980266 is about 495.9408233467.

The spelling of 121980266 in words is "one hundred twenty-one million, nine hundred eighty thousand, two hundred sixty-six".