121663316053 has 2 divisors, whose sum is σ = 121663316054. Its totient is φ = 121663316052.

The previous prime is 121663316041. The next prime is 121663316081. The reversal of 121663316053 is 350613366121.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 109973814129 + 11689501924 = 331623^2 + 108118^2 .

It is a cyclic number.

It is not a de Polignac number, because 121663316053 - 2⁹ = 121663315541 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (121663316023) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60831658026 + 60831658027.

It is an arithmetic number, because the mean of its divisors is an integer number (60831658027).

Almost surely, 2^121663316053 is an apocalyptic number.

It is an amenable number.

121663316053 is a deficient number, since it is larger than the sum of its proper divisors (1).

121663316053 is an equidigital number, since it uses as much as digits as its factorization.

121663316053 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 58320, while the sum is 37.

The spelling of 121663316053 in words is "one hundred twenty-one billion, six hundred sixty-three million, three hundred sixteen thousand, fifty-three".