121102201999 has 2 divisors, whose sum is σ = 121102202000. Its totient is φ = 121102201998.

The previous prime is 121102201991. The next prime is 121102202017. The reversal of 121102201999 is 999102201121.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 121102201999 - 2³ = 121102201991 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (121102201991) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60551100999 + 60551101000.

It is an arithmetic number, because the mean of its divisors is an integer number (60551101000).

Almost surely, 2^121102201999 is an apocalyptic number.

121102201999 is a deficient number, since it is larger than the sum of its proper divisors (1).

121102201999 is an equidigital number, since it uses as much as digits as its factorization.

121102201999 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5832, while the sum is 37.

The spelling of 121102201999 in words is "one hundred twenty-one billion, one hundred two million, two hundred one thousand, nine hundred ninety-nine".