212211112 has 8 divisors (see below), whose sum is σ = 397895850. Its totient is φ = 106105552.

The previous prime is 212211101. The next prime is 212211113. The reversal of 212211112 is 211112212.

It can be written as a sum of positive squares in only one way, i.e., 192265956 + 19945156 = 13866^2 + 4466^2 .

It is a tau number, because it is divible by the number of its divisors (8).

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

It is a junction number, because it is equal to n+sod(n) for n = 212211092 and 212211101.

It is not an unprimeable number, because it can be changed into a prime (212211113) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13263187 + ... + 13263202.

Almost surely, 2^212211112 is an apocalyptic number.

It is an amenable number.

212211112 is a deficient number, since it is larger than the sum of its proper divisors (185684738).

212211112 is a wasteful number, since it uses less digits than its factorization.

212211112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26526395 (or 26526391 counting only the distinct ones).

The product of its digits is 16, while the sum is 13.

The square root of 212211112 is about 14567.4675904908. The cubic root of 212211112 is about 596.4710553115.

Adding to 212211112 its reverse (211112212), we get a palindrome (423323324).

It can be divided in two parts, 212 and 211112, that multiplied together give a palindrome (44755744).

The spelling of 212211112 in words is "two hundred twelve million, two hundred eleven thousand, one hundred twelve".