121000002199 has 2 divisors, whose sum is σ = 121000002200. Its totient is φ = 121000002198.

The previous prime is 121000002197. The next prime is 121000002223. The reversal of 121000002199 is 991200000121.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 121000002199 - 2¹ = 121000002197 is a prime.

Together with 121000002197, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (121000002197) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60500001099 + 60500001100.

It is an arithmetic number, because the mean of its divisors is an integer number (60500001100).

Almost surely, 2^121000002199 is an apocalyptic number.

121000002199 is a deficient number, since it is larger than the sum of its proper divisors (1).

121000002199 is an equidigital number, since it uses as much as digits as its factorization.

121000002199 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 324, while the sum is 25.

The spelling of 121000002199 in words is "one hundred twenty-one billion, two thousand, one hundred ninety-nine".