211212011212 has 6 divisors (see below), whose sum is σ = 369621019628. Its totient is φ = 105606005604.

The previous prime is 211212011203. The next prime is 211212011377. The reversal of 211212011212 is 212110212112.

211212011212 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×211212011212² (a number of 23 digits) contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 26401501398 + ... + 26401501405.

Almost surely, 2^211212011212 is an apocalyptic number.

It is an amenable number.

211212011212 is a deficient number, since it is larger than the sum of its proper divisors (158409008416).

211212011212 is a wasteful number, since it uses less digits than its factorization.

211212011212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 52803002807 (or 52803002805 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 16.

Adding to 211212011212 its reverse (212110212112), we get a palindrome (423322223324).

Subtracting 211212011212 from its reverse (212110212112), we obtain a square (898200900 = 29970²).

The spelling of 211212011212 in words is "two hundred eleven billion, two hundred twelve million, eleven thousand, two hundred twelve".