211212220012 has 12 divisors (see below), whose sum is σ = 391363819560. Its totient is φ = 99393985856.

The previous prime is 211212220003. The next prime is 211212220061. The reversal of 211212220012 is 210022212112.

It is a happy number.

211212220012 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×211212220012² (a number of 23 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1553030962 + ... + 1553031097.

It is an arithmetic number, because the mean of its divisors is an integer number (32613651630).

Almost surely, 2^211212220012 is an apocalyptic number.

It is an amenable number.

211212220012 is a deficient number, since it is larger than the sum of its proper divisors (180151599548).

211212220012 is a wasteful number, since it uses less digits than its factorization.

211212220012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3106062080 (or 3106062078 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 211212220012 its reverse (210022212112), we get a palindrome (421234432124).

The spelling of 211212220012 in words is "two hundred eleven billion, two hundred twelve million, two hundred twenty thousand, twelve".