121611386 has 24 divisors (see below), whose sum is σ = 198307584. Its totient is φ = 55907280.

The previous prime is 121611367. The next prime is 121611389. The reversal of 121611386 is 683116121.

It is a hoax number, since the sum of its digits (29) coincides with the sum of the digits of its distinct prime factors.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (121611389) 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, 111335 + ... + 112421.

It is an arithmetic number, because the mean of its divisors is an integer number (8262816).

Almost surely, 2^121611386 is an apocalyptic number.

121611386 is a deficient number, since it is larger than the sum of its proper divisors (76696198).

121611386 is a wasteful number, since it uses less digits than its factorization.

121611386 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1446 (or 1433 counting only the distinct ones).

The product of its digits is 1728, while the sum is 29.

The square root of 121611386 is about 11027.7552566241. The cubic root of 121611386 is about 495.4403943856.

The spelling of 121611386 in words is "one hundred twenty-one million, six hundred eleven thousand, three hundred eighty-six".