212211213 has 16 divisors (see below), whose sum is σ = 293271552. Its totient is φ = 136350000.

The previous prime is 212211193. The next prime is 212211269. The reversal of 212211213 is 312112212.

It is not a de Polignac number, because 212211213 - 2¹² = 212207117 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 212211192 and 212211201.

It is a congruent number.

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 in 15 ways as a sum of consecutive naturals, for example, 18798 + ... + 27888.

It is an arithmetic number, because the mean of its divisors is an integer number (18329472).

Almost surely, 2^212211213 is an apocalyptic number.

It is an amenable number.

212211213 is a deficient number, since it is larger than the sum of its proper divisors (81060339).

212211213 is a wasteful number, since it uses less digits than its factorization.

212211213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9376.

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

The square root of 212211213 is about 14567.4710571190. The cubic root of 212211213 is about 596.4711499399.

Adding to 212211213 its reverse (312112212), we get a palindrome (524323425).

Subtracting 212211213 from its reverse (312112212), we obtain a palindrome (99900999).

The spelling of 212211213 in words is "two hundred twelve million, two hundred eleven thousand, two hundred thirteen".