211112422221 has 8 divisors (see below), whose sum is σ = 281498976864. Its totient is φ = 140733741200.

The previous prime is 211112422219. The next prime is 211112422237. The reversal of 211112422221 is 122224211112.

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

It is a cyclic number.

It is not a de Polignac number, because 211112422221 - 2¹ = 211112422219 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (211112422121) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1905555 + ... + 2013296.

It is an arithmetic number, because the mean of its divisors is an integer number (35187372108).

Almost surely, 2^211112422221 is an apocalyptic number.

It is an amenable number.

211112422221 is a deficient number, since it is larger than the sum of its proper divisors (70386554643).

211112422221 is a wasteful number, since it uses less digits than its factorization.

211112422221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3936811.

The product of its digits is 256, while the sum is 21.

Adding to 211112422221 its reverse (122224211112), we get a palindrome (333336633333).

The spelling of 211112422221 in words is "two hundred eleven billion, one hundred twelve million, four hundred twenty-two thousand, two hundred twenty-one".