121016516 has 6 divisors (see below), whose sum is σ = 211778910. Its totient is φ = 60508256.

The previous prime is 121016513. The next prime is 121016527. The reversal of 121016516 is 615610121.

It can be written as a sum of positive squares in only one way, i.e., 120121600 + 894916 = 10960^2 + 946^2 .

It is a junction number, because it is equal to n+sod(n) for n = 121016491 and 121016500.

It is not an unprimeable number, because it can be changed into a prime (121016513) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15127061 + ... + 15127068.

It is an arithmetic number, because the mean of its divisors is an integer number (35296485).

Almost surely, 2^121016516 is an apocalyptic number.

It is an amenable number.

121016516 is a deficient number, since it is larger than the sum of its proper divisors (90762394).

121016516 is a wasteful number, since it uses less digits than its factorization.

121016516 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30254133 (or 30254131 counting only the distinct ones).

The product of its (nonzero) digits is 360, while the sum is 23.

The square root of 121016516 is about 11000.7507016567. The cubic root of 121016516 is about 494.6312473176.

Adding to 121016516 its reverse (615610121), we get a palindrome (736626637).

The spelling of 121016516 in words is "one hundred twenty-one million, sixteen thousand, five hundred sixteen".