121266616 has 8 divisors (see below), whose sum is σ = 227374920. Its totient is φ = 60633304.

The previous prime is 121266611. The next prime is 121266617. The reversal of 121266616 is 616662121.

It is a tau number, because it is divible by the number of its divisors (8).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121266611) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7579156 + ... + 7579171.

It is an arithmetic number, because the mean of its divisors is an integer number (28421865).

Almost surely, 2^121266616 is an apocalyptic number.

It is an amenable number.

121266616 is a deficient number, since it is larger than the sum of its proper divisors (106108304).

121266616 is a wasteful number, since it uses less digits than its factorization.

121266616 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15158333 (or 15158329 counting only the distinct ones).

The product of its digits is 5184, while the sum is 31.

The square root of 121266616 is about 11012.1122406194. The cubic root of 121266616 is about 494.9717577330.

The spelling of 121266616 in words is "one hundred twenty-one million, two hundred sixty-six thousand, six hundred sixteen".