211112120102221 has 32 divisors (see below), whose sum is σ = 241062696000000. Its totient is φ = 183152461492224.

The previous prime is 211112120102207. The next prime is 211112120102231. The reversal of 211112120102221 is 122201021211112.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 211112120102221 - 2²⁷ = 211111985884493 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 (211112120102231) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 5131158976 + ... + 5131200118.

It is an arithmetic number, because the mean of its divisors is an integer number (7533209250000).

Almost surely, 2^{211112120102221} is an apocalyptic number.

It is an amenable number.

211112120102221 is a deficient number, since it is larger than the sum of its proper divisors (29950575897779).

211112120102221 is a wasteful number, since it uses less digits than its factorization.

211112120102221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 73165.

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

Adding to 211112120102221 its reverse (122201021211112), we get a palindrome (333313141313333).

The spelling of 211112120102221 in words is "two hundred eleven trillion, one hundred twelve billion, one hundred twenty million, one hundred two thousand, two hundred twenty-one".