211112222222 has 64 divisors (see below), whose sum is σ = 360619776000. Its totient is φ = 91865040000.

The previous prime is 211112222201. The next prime is 211112222273. The reversal of 211112222222 is 222222211112.

It is a super-2 number, since 2×211112222222² (a number of 23 digits) contains 22 as substring.

It is a nude number because it is divisible by every one of its digits.

211112222222 is a modest number, since divided by 222222 gives 211112 as remainder.

It is a junction number, because it is equal to n+sod(n) for n = 211112222194 and 211112222203.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 7983779 + ... + 8010177.

It is an arithmetic number, because the mean of its divisors is an integer number (5634684000).

Almost surely, 2^211112222222 is an apocalyptic number.

211112222222 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

211112222222 is a deficient number, since it is larger than the sum of its proper divisors (149507553778).

211112222222 is a wasteful number, since it uses less digits than its factorization.

211112222222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26633.

The product of its digits is 256, while the sum is 20.

Adding to 211112222222 its reverse (222222211112), we get a palindrome (433334433334).

It can be divided in two parts, 211112 and 222222, that added together give a palindrome (433334).

The spelling of 211112222222 in words is "two hundred eleven billion, one hundred twelve million, two hundred twenty-two thousand, two hundred twenty-two".