121066666 has 16 divisors (see below), whose sum is σ = 208920960. Its totient is φ = 51541200.

The previous prime is 121066661. The next prime is 121066679. The reversal of 121066666 is 666660121.

121066666 is a modest number, since divided by 66666 gives 1210 as remainder.

It is not an unprimeable number, because it can be changed into a prime (121066661) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 26521 + ... + 30748.

It is an arithmetic number, because the mean of its divisors is an integer number (13057560).

Almost surely, 2^121066666 is an apocalyptic number.

121066666 is a deficient number, since it is larger than the sum of its proper divisors (87854294).

121066666 is a wasteful number, since it uses less digits than its factorization.

121066666 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 57429.

The product of its (nonzero) digits is 15552, while the sum is 34.

The square root of 121066666 is about 11003.0298554535. The cubic root of 121066666 is about 494.6995639742.

It can be divided in two parts, 1210 and 66666, that added together give a palindrome (67876).

The spelling of 121066666 in words is "one hundred twenty-one million, sixty-six thousand, six hundred sixty-six".