121310029903 has 2 divisors, whose sum is σ = 121310029904. Its totient is φ = 121310029902.

The previous prime is 121310029889. The next prime is 121310029913. The reversal of 121310029903 is 309920013121.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 121310029903 - 2⁵ = 121310029871 is a prime.

It is a super-2 number, since 2×121310029903² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (121310029913) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60655014951 + 60655014952.

It is an arithmetic number, because the mean of its divisors is an integer number (60655014952).

Almost surely, 2^121310029903 is an apocalyptic number.

121310029903 is a deficient number, since it is larger than the sum of its proper divisors (1).

121310029903 is an equidigital number, since it uses as much as digits as its factorization.

121310029903 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2916, while the sum is 31.

The spelling of 121310029903 in words is "one hundred twenty-one billion, three hundred ten million, twenty-nine thousand, nine hundred three".