12102121099 has 2 divisors, whose sum is σ = 12102121100. Its totient is φ = 12102121098.

The previous prime is 12102121069. The next prime is 12102121127. The reversal of 12102121099 is 99012120121.

It is an a-pointer prime, because the next prime (12102121127) can be obtained adding 12102121099 to its sum of digits (28).

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 12102121099 - 2⁵ = 12102121067 is a prime.

It is a super-2 number, since 2×12102121099² (a number of 21 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (12102121049) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6051060549 + 6051060550.

It is an arithmetic number, because the mean of its divisors is an integer number (6051060550).

Almost surely, 2^12102121099 is an apocalyptic number.

12102121099 is a deficient number, since it is larger than the sum of its proper divisors (1).

12102121099 is an equidigital number, since it uses as much as digits as its factorization.

12102121099 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 648, while the sum is 28.

The spelling of 12102121099 in words is "twelve billion, one hundred two million, one hundred twenty-one thousand, ninety-nine".