121966110 has 48 divisors (see below), whose sum is σ = 362415456. Its totient is φ = 27877824.

The previous prime is 121966057. The next prime is 121966123. The reversal of 121966110 is 11669121.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 96169 + ... + 97428.

It is an arithmetic number, because the mean of its divisors is an integer number (7550322).

Almost surely, 2^121966110 is an apocalyptic number.

121966110 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

121966110 is an abundant number, since it is smaller than the sum of its proper divisors (240449346).

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

121966110 is a wasteful number, since it uses less digits than its factorization.

121966110 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 193617 (or 193614 counting only the distinct ones).

The product of its (nonzero) digits is 648, while the sum is 27.

The square root of 121966110 is about 11043.8267824156. The cubic root of 121966110 is about 495.9216377027.

The spelling of 121966110 in words is "one hundred twenty-one million, nine hundred sixty-six thousand, one hundred ten".