211001122222 has 32 divisors (see below), whose sum is σ = 348796303200. Its totient is φ = 94931904000.

The previous prime is 211001122187. The next prime is 211001122247. The reversal of 211001122222 is 222221100112.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 211001122196 and 211001122205.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8718154 + ... + 8742322.

It is an arithmetic number, because the mean of its divisors is an integer number (10899884475).

Almost surely, 2^211001122222 is an apocalyptic number.

211001122222 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

211001122222 is a deficient number, since it is larger than the sum of its proper divisors (137795180978).

211001122222 is a wasteful number, since it uses less digits than its factorization.

211001122222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28212.

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 211001122222 its reverse (222221100112), we get a palindrome (433222222334).

It can be divided in two parts, 21100112 and 2222, that multiplied together give a palindrome (46884448864).

The spelling of 211001122222 in words is "two hundred eleven billion, one million, one hundred twenty-two thousand, two hundred twenty-two".