222001021211 has 16 divisors (see below), whose sum is σ = 226898918400. Its totient is φ = 217161891648.

The previous prime is 222001021141. The next prime is 222001021259. The reversal of 222001021211 is 112120100222.

It is a cyclic number.

It is not a de Polignac number, because 222001021211 - 2¹⁸ = 222000759067 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (222001021511) 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 15 ways as a sum of consecutive naturals, for example, 5326991 + ... + 5368503.

It is an arithmetic number, because the mean of its divisors is an integer number (14181182400).

Almost surely, 2^222001021211 is an apocalyptic number.

222001021211 is a deficient number, since it is larger than the sum of its proper divisors (4897897189).

222001021211 is a wasteful number, since it uses less digits than its factorization.

222001021211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42218.

The product of its (nonzero) digits is 32, while the sum is 14.

Adding to 222001021211 its reverse (112120100222), we get a palindrome (334121121433).

The spelling of 222001021211 in words is "two hundred twenty-two billion, one million, twenty-one thousand, two hundred eleven".