121016513 has 2 divisors, whose sum is σ = 121016514. Its totient is φ = 121016512.

The previous prime is 121016479. The next prime is 121016527. The reversal of 121016513 is 315610121.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 118635664 + 2380849 = 10892^2 + 1543^2 .

It is a cyclic number.

It is not a de Polignac number, because 121016513 - 2¹² = 121012417 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (121016563) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60508256 + 60508257.

It is an arithmetic number, because the mean of its divisors is an integer number (60508257).

Almost surely, 2^121016513 is an apocalyptic number.

It is an amenable number.

121016513 is a deficient number, since it is larger than the sum of its proper divisors (1).

121016513 is an equidigital number, since it uses as much as digits as its factorization.

121016513 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 180, while the sum is 20.

The square root of 121016513 is about 11000.7505653024. The cubic root of 121016513 is about 494.6312432303.

Adding to 121016513 its reverse (315610121), we get a palindrome (436626634).

The spelling of 121016513 in words is "one hundred twenty-one million, sixteen thousand, five hundred thirteen".