121266618 has 32 divisors (see below), whose sum is σ = 265144320. Its totient is φ = 36669360.

The previous prime is 121266617. The next prime is 121266623. The reversal of 121266618 is 816662121.

It is a Harshad number since it is a multiple of its sum of digits (33).

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 in 15 ways as a sum of consecutive naturals, for example, 34423 + ... + 37781.

It is an arithmetic number, because the mean of its divisors is an integer number (8285760).

Almost surely, 2^121266618 is an apocalyptic number.

121266618 is an abundant number, since it is smaller than the sum of its proper divisors (143877702).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

121266618 is a wasteful number, since it uses less digits than its factorization.

121266618 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3922.

The product of its digits is 6912, while the sum is 33.

The square root of 121266618 is about 11012.1123314285. The cubic root of 121266618 is about 494.9717604541.

The spelling of 121266618 in words is "one hundred twenty-one million, two hundred sixty-six thousand, six hundred eighteen".