211221000210212 has 48 divisors (see below), whose sum is σ = 374974663284480. Its totient is φ = 104087515732992.

The previous prime is 211221000210211. The next prime is 211221000210251. The reversal of 211221000210212 is 212012000122112.

It is a super-2 number, since 2×211221000210212² (a number of 29 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (211221000210211) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5634193964 + ... + 5634231452.

It is an arithmetic number, because the mean of its divisors is an integer number (7811972151760).

Almost surely, 2^{211221000210212} is an apocalyptic number.

It is an amenable number.

211221000210212 is a deficient number, since it is larger than the sum of its proper divisors (163753663074268).

211221000210212 is a wasteful number, since it uses less digits than its factorization.

211221000210212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 51180 (or 51178 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 17.

Adding to 211221000210212 its reverse (212012000122112), we get a palindrome (423233000332324).

The spelling of 211221000210212 in words is "two hundred eleven trillion, two hundred twenty-one billion, two hundred ten thousand, two hundred twelve".