121015716 has 36 divisors (see below), whose sum is σ = 285940368. Its totient is φ = 39831408.

The previous prime is 121015709. The next prime is 121015729. The reversal of 121015716 is 617510121.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 394035 + ... + 394341.

It is an arithmetic number, because the mean of its divisors is an integer number (7942788).

Almost surely, 2^121015716 is an apocalyptic number.

It is an amenable number.

121015716 is an abundant number, since it is smaller than the sum of its proper divisors (164924652).

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

121015716 is a wasteful number, since it uses less digits than its factorization.

121015716 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 728 (or 419 counting only the distinct ones).

The product of its (nonzero) digits is 420, while the sum is 24.

The square root of 121015716 is about 11000.7143404417. The cubic root of 121015716 is about 494.6301573676.

Adding to 121015716 its reverse (617510121), we get a palindrome (738525837).

The spelling of 121015716 in words is "one hundred twenty-one million, fifteen thousand, seven hundred sixteen".