10000121099 has 2 divisors, whose sum is σ = 10000121100. Its totient is φ = 10000121098.

The previous prime is 10000121077. The next prime is 10000121147. The reversal of 10000121099 is 99012100001.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 10000121099 - 2¹² = 10000117003 is a prime.

It is not a weakly prime, because it can be changed into another prime (10000121009) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5000060549 + 5000060550.

It is an arithmetic number, because the mean of its divisors is an integer number (5000060550).

Almost surely, 2^10000121099 is an apocalyptic number.

10000121099 is a deficient number, since it is larger than the sum of its proper divisors (1).

10000121099 is an equidigital number, since it uses as much as digits as its factorization.

10000121099 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 162, while the sum is 23.

The spelling of 10000121099 in words is "ten billion, one hundred twenty-one thousand, ninety-nine".