121013663 has 2 divisors, whose sum is σ = 121013664. Its totient is φ = 121013662.

The previous prime is 121013609. The next prime is 121013687. The reversal of 121013663 is 366310121.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 121013663 - 2⁸ = 121013407 is a prime.

It is a Sophie Germain prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (121010663) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60506831 + 60506832.

It is an arithmetic number, because the mean of its divisors is an integer number (60506832).

Almost surely, 2^121013663 is an apocalyptic number.

121013663 is a deficient number, since it is larger than the sum of its proper divisors (1).

121013663 is an equidigital number, since it uses as much as digits as its factorization.

121013663 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 648, while the sum is 23.

The square root of 121013663 is about 11000.6210279238. The cubic root of 121013663 is about 494.6273602613.

Adding to 121013663 its reverse (366310121), we get a palindrome (487323784).

The spelling of 121013663 in words is "one hundred twenty-one million, thirteen thousand, six hundred sixty-three".