211222211222211 has 32 divisors (see below), whose sum is σ = 322133027374080. Its totient is φ = 120596932145664.

The previous prime is 211222211222189. The next prime is 211222211222221. The reversal of 211222211222211 is 112222112222112.

It is not a de Polignac number, because 211222211222211 - 2⁷ = 211222211222083 is a prime.

It is a super-2 number, since 2×211222211222211² (a number of 29 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (211222211222221) 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, 1717848711 + ... + 1717971663.

It is an arithmetic number, because the mean of its divisors is an integer number (10066657105440).

Almost surely, 2^{211222211222211} is an apocalyptic number.

211222211222211 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

211222211222211 is a deficient number, since it is larger than the sum of its proper divisors (110910816151869).

211222211222211 is a wasteful number, since it uses less digits than its factorization.

211222211222211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 191075.

The product of its digits is 512, while the sum is 24.

Adding to 211222211222211 its reverse (112222112222112), we get a palindrome (323444323444323).

Subtracting from 211222211222211 its reverse (112222112222112), we obtain a palindrome (99000099000099).

It can be divided in two parts, 2 and 11222211222211, that multiplied together give a palindrome (22444422444422).

The spelling of 211222211222211 in words is "two hundred eleven trillion, two hundred twenty-two billion, two hundred eleven million, two hundred twenty-two thousand, two hundred eleven".