210221220199 has 4 divisors (see below), whose sum is σ = 210375004464. Its totient is φ = 210067435936.

The previous prime is 210221220047. The next prime is 210221220203. The reversal of 210221220199 is 991022122012.

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 210221220199 - 2²¹ = 210219123047 is a prime.

It is a super-2 number, since 2×210221220199² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 210221220199.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (210221220299) 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 in 3 ways as a sum of consecutive naturals, for example, 76890082 + ... + 76892815.

It is an arithmetic number, because the mean of its divisors is an integer number (52593751116).

Almost surely, 2^210221220199 is an apocalyptic number.

210221220199 is a deficient number, since it is larger than the sum of its proper divisors (153784265).

210221220199 is a wasteful number, since it uses less digits than its factorization.

210221220199 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 153784264.

The product of its (nonzero) digits is 2592, while the sum is 31.

The spelling of 210221220199 in words is "two hundred ten billion, two hundred twenty-one million, two hundred twenty thousand, one hundred ninety-nine".