121012516 has 24 divisors (see below), whose sum is σ = 215349120. Its totient is φ = 59490912.

The previous prime is 121012487. The next prime is 121012517. The reversal of 121012516 is 615210121.

It is a junction number, because it is equal to n+sod(n) for n = 121012493 and 121012502.

It is not an unprimeable number, because it can be changed into a prime (121012517) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 91935 + ... + 93241.

It is an arithmetic number, because the mean of its divisors is an integer number (8972880).

Almost surely, 2^121012516 is an apocalyptic number.

It is an amenable number.

121012516 is a deficient number, since it is larger than the sum of its proper divisors (94336604).

121012516 is a wasteful number, since it uses less digits than its factorization.

121012516 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1683 (or 1681 counting only the distinct ones).

The product of its (nonzero) digits is 120, while the sum is 19.

The square root of 121012516 is about 11000.5688943800. The cubic root of 121012516 is about 494.6257975194.

Adding to 121012516 its reverse (615210121), we get a palindrome (736222637).

The spelling of 121012516 in words is "one hundred twenty-one million, twelve thousand, five hundred sixteen".