121010959099 has 2 divisors, whose sum is σ = 121010959100. Its totient is φ = 121010959098.

The previous prime is 121010959067. The next prime is 121010959151. The reversal of 121010959099 is 990959010121.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 121010959099 - 2⁵ = 121010959067 is a prime.

It is not a weakly prime, because it can be changed into another prime (121010959999) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60505479549 + 60505479550.

It is an arithmetic number, because the mean of its divisors is an integer number (60505479550).

Almost surely, 2^121010959099 is an apocalyptic number.

121010959099 is a deficient number, since it is larger than the sum of its proper divisors (1).

121010959099 is an equidigital number, since it uses as much as digits as its factorization.

121010959099 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 65610, while the sum is 46.

The spelling of 121010959099 in words is "one hundred twenty-one billion, ten million, nine hundred fifty-nine thousand, ninety-nine".