212612216211 has 6 divisors (see below), whose sum is σ = 307106534540. Its totient is φ = 141741477468.

The previous prime is 212612216111. The next prime is 212612216221. The reversal of 212612216211 is 112612216212.

It is a happy number.

212612216211 is a `hidden beast` number, since 2 + 1 + 2 + 6 + 12 + 21 + 621 + 1 = 666.

It is not a de Polignac number, because 212612216211 - 2¹⁷ = 212612085139 is a prime.

It is a super-2 number, since 2×212612216211² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (212612216221) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 11811789781 + ... + 11811789798.

Almost surely, 2^212612216211 is an apocalyptic number.

212612216211 is a deficient number, since it is larger than the sum of its proper divisors (94494318329).

212612216211 is a wasteful number, since it uses less digits than its factorization.

212612216211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23623579585 (or 23623579582 counting only the distinct ones).

The product of its digits is 1152, while the sum is 27.

Subtracting from 212612216211 its reverse (112612216212), we obtain a palindrome (99999999999).

The spelling of 212612216211 in words is "two hundred twelve billion, six hundred twelve million, two hundred sixteen thousand, two hundred eleven".