221212110202199 has 4 divisors (see below), whose sum is σ = 232854852844440. Its totient is φ = 209569367559960.

The previous prime is 221212110202177. The next prime is 221212110202231. The reversal of 221212110202199 is 991202011212122.

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

It is a cyclic number.

It is not a de Polignac number, because 221212110202199 - 2¹⁶ = 221212110136663 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (221212110202129) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5821371321092 + ... + 5821371321129.

It is an arithmetic number, because the mean of its divisors is an integer number (58213713211110).

Almost surely, 2^{221212110202199} is an apocalyptic number.

221212110202199 is a deficient number, since it is larger than the sum of its proper divisors (11642742642241).

221212110202199 is a wasteful number, since it uses less digits than its factorization.

221212110202199 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11642742642240.

The product of its (nonzero) digits is 5184, while the sum is 35.

The spelling of 221212110202199 in words is "two hundred twenty-one trillion, two hundred twelve billion, one hundred ten million, two hundred two thousand, one hundred ninety-nine".