121507716 has 72 divisors (see below), whose sum is σ = 316540000. Its totient is φ = 36241920.

The previous prime is 121507703. The next prime is 121507733. The reversal of 121507716 is 617705121.

121507716 = T₃₀₉ + T₃₁₀ + ... + T₉₁₁.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 96660 + ... + 97908.

Almost surely, 2^121507716 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 121507716, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (158270000).

121507716 is an abundant number, since it is smaller than the sum of its proper divisors (195032284).

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

121507716 is a wasteful number, since it uses less digits than its factorization.

121507716 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1345 (or 1332 counting only the distinct ones).

The product of its (nonzero) digits is 2940, while the sum is 30.

The square root of 121507716 is about 11023.0538418353. The cubic root of 121507716 is about 495.2995717504.

The spelling of 121507716 in words is "one hundred twenty-one million, five hundred seven thousand, seven hundred sixteen".