211221200986 has 8 divisors (see below), whose sum is σ = 316836783360. Its totient is φ = 105608939868.

The previous prime is 211221200977. The next prime is 211221201041. The reversal of 211221200986 is 689002122112.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×211221200986² (a number of 23 digits) contains 22 as substring.

It is an unprimeable number.

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, 664716 + ... + 929671.

It is an arithmetic number, because the mean of its divisors is an integer number (39604597920).

Almost surely, 2^211221200986 is an apocalyptic number.

211221200986 is a deficient number, since it is larger than the sum of its proper divisors (105615582374).

211221200986 is a wasteful number, since it uses less digits than its factorization.

211221200986 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1660628.

The product of its (nonzero) digits is 6912, while the sum is 34.

The spelling of 211221200986 in words is "two hundred eleven billion, two hundred twenty-one million, two hundred thousand, nine hundred eighty-six".