121688214 has 32 divisors (see below), whose sum is σ = 248142336. Its totient is φ = 39774240.

The previous prime is 121688213. The next prime is 121688251. The reversal of 121688214 is 412886121.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121688213) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 108384 + ... + 109500.

It is an arithmetic number, because the mean of its divisors is an integer number (7754448).

Almost surely, 2^121688214 is an apocalyptic number.

121688214 is an abundant number, since it is smaller than the sum of its proper divisors (126454122).

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

121688214 is a wasteful number, since it uses less digits than its factorization.

121688214 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1460.

The product of its digits is 6144, while the sum is 33.

The square root of 121688214 is about 11031.2380991437. The cubic root of 121688214 is about 495.5447039219.

The spelling of 121688214 in words is "one hundred twenty-one million, six hundred eighty-eight thousand, two hundred fourteen".