121216494 has 96 divisors (see below), whose sum is σ = 303367680. Its totient is φ = 32078592.

The previous prime is 121216483. The next prime is 121216507. The reversal of 121216494 is 494612121.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 394689 + ... + 394995.

It is an arithmetic number, because the mean of its divisors is an integer number (3160080).

Almost surely, 2^121216494 is an apocalyptic number.

121216494 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 121216494, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (151683840).

121216494 is an abundant number, since it is smaller than the sum of its proper divisors (182151186).

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

121216494 is a wasteful number, since it uses less digits than its factorization.

121216494 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 422 (or 415 counting only the distinct ones).

The product of its digits is 3456, while the sum is 30.

The square root of 121216494 is about 11009.8362385641. The cubic root of 121216494 is about 494.9035543146.

The spelling of 121216494 in words is "one hundred twenty-one million, two hundred sixteen thousand, four hundred ninety-four".