121529516 has 12 divisors (see below), whose sum is σ = 221923632. Its totient is φ = 58122768.

The previous prime is 121529503. The next prime is 121529521. The reversal of 121529516 is 615925121.

It is a hoax number, since the sum of its digits (32) coincides with the sum of the digits of its distinct prime factors.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 660395 + ... + 660578.

It is an arithmetic number, because the mean of its divisors is an integer number (18493636).

Almost surely, 2^121529516 is an apocalyptic number.

It is an amenable number.

121529516 is a deficient number, since it is larger than the sum of its proper divisors (100394116).

121529516 is a wasteful number, since it uses less digits than its factorization.

121529516 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1321000 (or 1320998 counting only the distinct ones).

The product of its digits is 5400, while the sum is 32.

The square root of 121529516 is about 11024.0426341701. The cubic root of 121529516 is about 495.3291909530.

The spelling of 121529516 in words is "one hundred twenty-one million, five hundred twenty-nine thousand, five hundred sixteen".