1211210102199 has 4 divisors (see below), whose sum is σ = 1614946802936. Its totient is φ = 807473401464.

The previous prime is 1211210102171. The next prime is 1211210102209. The reversal of 1211210102199 is 9912010121121.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 1211210102199 - 2²⁷ = 1211075884471 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1211210102899) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 201868350364 + ... + 201868350369.

It is an arithmetic number, because the mean of its divisors is an integer number (403736700734).

Almost surely, 2^{1211210102199} is an apocalyptic number.

1211210102199 is a deficient number, since it is larger than the sum of its proper divisors (403736700737).

1211210102199 is an equidigital number, since it uses as much as digits as its factorization.

1211210102199 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 403736700736.

The product of its (nonzero) digits is 648, while the sum is 30.

The spelling of 1211210102199 in words is "one trillion, two hundred eleven billion, two hundred ten million, one hundred two thousand, one hundred ninety-nine".