121187616 has 48 divisors (see below), whose sum is σ = 347040288. Its totient is φ = 36723200.

The previous prime is 121187609. The next prime is 121187683. The reversal of 121187616 is 616781121.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (48).

It is a Harshad number since it is a multiple of its sum of digits (33).

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, 56325 + ... + 58436.

It is an arithmetic number, because the mean of its divisors is an integer number (7230006).

Almost surely, 2^121187616 is an apocalyptic number.

121187616 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

121187616 is an abundant number, since it is smaller than the sum of its proper divisors (225852672).

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

121187616 is a wasteful number, since it uses less digits than its factorization.

121187616 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 114785 (or 114777 counting only the distinct ones).

The product of its digits is 4032, while the sum is 33.

The square root of 121187616 is about 11008.5246967975. The cubic root of 121187616 is about 494.8642500927.

The spelling of 121187616 in words is "one hundred twenty-one million, one hundred eighty-seven thousand, six hundred sixteen".