121608318 has 32 divisors (see below), whose sum is σ = 264642336. Its totient is φ = 37029888.

The previous prime is 121608313. The next prime is 121608323. The reversal of 121608318 is 813806121.

It is an interprime number because it is at equal distance from previous prime (121608313) and next prime (121608323).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121608313) 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, 471 + ... + 15602.

It is an arithmetic number, because the mean of its divisors is an integer number (8270073).

Almost surely, 2^121608318 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 121608318, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (132321168).

121608318 is an abundant number, since it is smaller than the sum of its proper divisors (143034018).

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

121608318 is a wasteful number, since it uses less digits than its factorization.

121608318 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16188.

The product of its (nonzero) digits is 2304, while the sum is 30.

The square root of 121608318 is about 11027.6161521881. The cubic root of 121608318 is about 495.4362280435.

The spelling of 121608318 in words is "one hundred twenty-one million, six hundred eight thousand, three hundred eighteen".