121212002099999 has 2 divisors, whose sum is σ = 121212002100000. Its totient is φ = 121212002099998.

The previous prime is 121212002099899. The next prime is 121212002100011. The reversal of 121212002099999 is 999990200212121.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 121212002099999 - 2¹² = 121212002095903 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (121212002099099) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60606001049999 + 60606001050000.

It is an arithmetic number, because the mean of its divisors is an integer number (60606001050000).

Almost surely, 2^{121212002099999} is an apocalyptic number.

121212002099999 is a deficient number, since it is larger than the sum of its proper divisors (1).

121212002099999 is an equidigital number, since it uses as much as digits as its factorization.

121212002099999 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 944784, while the sum is 56.

The spelling of 121212002099999 in words is "one hundred twenty-one trillion, two hundred twelve billion, two million, ninety-nine thousand, nine hundred ninety-nine".