121361266 has 24 divisors (see below), whose sum is σ = 208727604. Its totient is φ = 52715520.

The previous prime is 121361263. The next prime is 121361281. The reversal of 121361266 is 662163121.

It can be written as a sum of positive squares in 6 ways, for example, as 46036225 + 75325041 = 6785^2 + 8679^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121361263) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 4815 + ... + 16306.

Almost surely, 2^121361266 is an apocalyptic number.

121361266 is a deficient number, since it is larger than the sum of its proper divisors (87366338).

121361266 is a wasteful number, since it uses less digits than its factorization.

121361266 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21166 (or 21153 counting only the distinct ones).

The product of its digits is 2592, while the sum is 28.

The square root of 121361266 is about 11016.4089430268. The cubic root of 121361266 is about 495.1005013090.

The spelling of 121361266 in words is "one hundred twenty-one million, three hundred sixty-one thousand, two hundred sixty-six".