121775214 has 64 divisors (see below), whose sum is σ = 278940672. Its totient is φ = 35107200.

The previous prime is 121775191. The next prime is 121775243. The reversal of 121775214 is 412577121.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 114244 + ... + 115304.

It is an arithmetic number, because the mean of its divisors is an integer number (4358448).

Almost surely, 2^121775214 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 121775214, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (139470336).

121775214 is an abundant number, since it is smaller than the sum of its proper divisors (157165458).

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

121775214 is a wasteful number, since it uses less digits than its factorization.

121775214 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1161.

The product of its digits is 3920, while the sum is 30.

The square root of 121775214 is about 11035.1807416100. The cubic root of 121775214 is about 495.6627710094.

It can be divided in two parts, 12177 and 5214, that added together give a triangular number (17391 = T₁₈₆).

The spelling of 121775214 in words is "one hundred twenty-one million, seven hundred seventy-five thousand, two hundred fourteen".