121966611 has 16 divisors (see below), whose sum is σ = 175338240. Its totient is φ = 74967840.

The previous prime is 121966601. The next prime is 121966627. The reversal of 121966611 is 116669121.

It is a de Polignac number, because none of the positive numbers 2^k-121966611 is a prime.

It is not an unprimeable number, because it can be changed into a prime (121966601) 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, 50256 + ... + 52626.

It is an arithmetic number, because the mean of its divisors is an integer number (10958640).

Almost surely, 2^121966611 is an apocalyptic number.

121966611 is a deficient number, since it is larger than the sum of its proper divisors (53371629).

121966611 is a wasteful number, since it uses less digits than its factorization.

121966611 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3706.

The product of its digits is 3888, while the sum is 33.

The square root of 121966611 is about 11043.8494647473. The cubic root of 121966611 is about 495.9223167339.

The spelling of 121966611 in words is "one hundred twenty-one million, nine hundred sixty-six thousand, six hundred eleven".