121966190 has 8 divisors (see below), whose sum is σ = 219539160. Its totient is φ = 48786472.

The previous prime is 121966153. The next prime is 121966193. The reversal of 121966190 is 91669121.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×121966190² = 29751503006232200, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 121966190.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121966193) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6098300 + ... + 6098319.

It is an arithmetic number, because the mean of its divisors is an integer number (27442395).

Almost surely, 2^121966190 is an apocalyptic number.

121966190 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

121966190 is a deficient number, since it is larger than the sum of its proper divisors (97572970).

121966190 is a wasteful number, since it uses less digits than its factorization.

121966190 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12196626.

The product of its (nonzero) digits is 5832, while the sum is 35.

The square root of 121966190 is about 11043.8304043479. The cubic root of 121966190 is about 495.9217461310.

The spelling of 121966190 in words is "one hundred twenty-one million, nine hundred sixty-six thousand, one hundred ninety".