221112001012211 has 2 divisors, whose sum is σ = 221112001012212. Its totient is φ = 221112001012210.

The previous prime is 221112001012169. The next prime is 221112001012267. The reversal of 221112001012211 is 112210100211122.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-221112001012211 is a prime.

It is a super-2 number, since 2×221112001012211² (a number of 29 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 221112001012211.

It is not a weakly prime, because it can be changed into another prime (221112001018211) 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 as a sum of consecutive naturals, namely, 110556000506105 + 110556000506106.

It is an arithmetic number, because the mean of its divisors is an integer number (110556000506106).

Almost surely, 2^{221112001012211} is an apocalyptic number.

221112001012211 is a deficient number, since it is larger than the sum of its proper divisors (1).

221112001012211 is an equidigital number, since it uses as much as digits as its factorization.

221112001012211 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 32, while the sum is 17.

Adding to 221112001012211 its reverse (112210100211122), we get a palindrome (333322101223333).

The spelling of 221112001012211 in words is "two hundred twenty-one trillion, one hundred twelve billion, one million, twelve thousand, two hundred eleven".