211201211220012 has 72 divisors (see below), whose sum is σ = 588307249914384. Its totient is φ = 63473709269376.

The previous prime is 211201211220011. The next prime is 211201211220029. The reversal of 211201211220012 is 210022112102112.

211201211220012 is a `hidden beast` number, since 21 + 1 + 201 + 211 + 220 + 0 + 12 = 666.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is not an unprimeable number, because it can be changed into a prime (211201211220011) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 5247475683 + ... + 5247515930.

Almost surely, 2^{211201211220012} is an apocalyptic number.

It is an amenable number.

211201211220012 is an abundant number, since it is smaller than the sum of its proper divisors (377106038694372).

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

211201211220012 is a wasteful number, since it uses less digits than its factorization.

211201211220012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10494991679 (or 10494991674 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 18.

Adding to 211201211220012 its reverse (210022112102112), we get a palindrome (421223323322124).

The spelling of 211201211220012 in words is "two hundred eleven trillion, two hundred one billion, two hundred eleven million, two hundred twenty thousand, twelve".