201222011221111 has 4 divisors (see below), whose sum is σ = 201222684172872. Its totient is φ = 201221338269352.

The previous prime is 201222011221093. The next prime is 201222011221129. The reversal of 201222011221111 is 111122110222102.

It is a happy number.

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

It is an interprime number because it is at equal distance from previous prime (201222011221093) and next prime (201222011221129).

It is a cyclic number.

It is not a de Polignac number, because 201222011221111 - 2⁵ = 201222011221079 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (201222011225111) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 336027160 + ... + 336625453.

It is an arithmetic number, because the mean of its divisors is an integer number (50305671043218).

Almost surely, 2^{201222011221111} is an apocalyptic number.

201222011221111 is a deficient number, since it is larger than the sum of its proper divisors (672951761).

201222011221111 is an equidigital number, since it uses as much as digits as its factorization.

201222011221111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 672951760.

The product of its (nonzero) digits is 64, while the sum is 19.

Adding to 201222011221111 its reverse (111122110222102), we get a palindrome (312344121443213).

Subtracting from 201222011221111 its reverse (111122110222102), we obtain a palindrome (90099900999009).

The spelling of 201222011221111 in words is "two hundred one trillion, two hundred twenty-two billion, eleven million, two hundred twenty-one thousand, one hundred eleven".