211222113 has 8 divisors (see below), whose sum is σ = 283186176. Its totient is φ = 140036400.

The previous prime is 211222111. The next prime is 211222147. The reversal of 211222113 is 311222112.

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

It is not a de Polignac number, because 211222113 - 2¹ = 211222111 is a prime.

It is a super-2 number, since 2×211222113² = 89229562040369538, which contains 22 as substring.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 211222092 and 211222101.

It is not an unprimeable number, because it can be changed into a prime (211222111) 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, 193953 + ... + 195038.

It is an arithmetic number, because the mean of its divisors is an integer number (35398272).

Almost surely, 2^211222113 is an apocalyptic number.

It is an amenable number.

211222113 is a deficient number, since it is larger than the sum of its proper divisors (71964063).

211222113 is a wasteful number, since it uses less digits than its factorization.

211222113 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 389175.

The product of its digits is 48, while the sum is 15.

The square root of 211222113 is about 14533.4824801215. The cubic root of 211222113 is about 595.5430045201.

Adding to 211222113 its reverse (311222112), we get a palindrome (522444225).

Subtracting 211222113 from its reverse (311222112), we obtain a palindrome (99999999).

The spelling of 211222113 in words is "two hundred eleven million, two hundred twenty-two thousand, one hundred thirteen".