121841916 has 24 divisors (see below), whose sum is σ = 324912000. Its totient is φ = 34811952.

The previous prime is 121841897. The next prime is 121841947. The reversal of 121841916 is 619148121.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 725166 + ... + 725333.

It is an arithmetic number, because the mean of its divisors is an integer number (13538000).

Almost surely, 2^121841916 is an apocalyptic number.

It is an amenable number.

121841916 is an abundant number, since it is smaller than the sum of its proper divisors (203070084).

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

121841916 is a wasteful number, since it uses less digits than its factorization.

121841916 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1450513 (or 1450511 counting only the distinct ones).

The product of its digits is 3456, while the sum is 33.

The square root of 121841916 is about 11038.2025710711. The cubic root of 121841916 is about 495.7532537451.

It can be divided in two parts, 1218 and 41916, that added together give a palindrome (43134).

The spelling of 121841916 in words is "one hundred twenty-one million, eight hundred forty-one thousand, nine hundred sixteen".