211211200012 has 48 divisors (see below), whose sum is σ = 426165516000. Its totient is φ = 90915277824.

The previous prime is 211211199949. The next prime is 211211200037. The reversal of 211211200012 is 210002112112.

It is a super-2 number, since 2×211211200012² (a number of 23 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 211211199965 and 211211200001.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2781087 + ... + 2856022.

It is an arithmetic number, because the mean of its divisors is an integer number (8878448250).

Almost surely, 2^211211200012 is an apocalyptic number.

It is an amenable number.

211211200012 is an abundant number, since it is smaller than the sum of its proper divisors (214954315988).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

211211200012 is a wasteful number, since it uses less digits than its factorization.

211211200012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5637178 (or 5637176 counting only the distinct ones).

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

Adding to 211211200012 its reverse (210002112112), we get a palindrome (421213312124).

The spelling of 211211200012 in words is "two hundred eleven billion, two hundred eleven million, two hundred thousand, twelve".