2211221200212 has 72 divisors (see below), whose sum is σ = 5626234164096. Its totient is φ = 732240520704.

The previous prime is 2211221200207. The next prime is 2211221200259. The reversal of 2211221200212 is 2120021221122.

It is a happy number.

2211221200212 is a `hidden beast` number, since 2 + 211 + 221 + 20 + 0 + 212 = 666.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 3491428 + ... + 4075844.

It is an arithmetic number, because the mean of its divisors is an integer number (78142141168).

Almost surely, 2^{2211221200212} is an apocalyptic number.

It is an amenable number.

2211221200212 is an abundant number, since it is smaller than the sum of its proper divisors (3415012963884).

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

2211221200212 is a wasteful number, since it uses less digits than its factorization.

2211221200212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 585117 (or 585112 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 18.

Adding to 2211221200212 its reverse (2120021221122), we get a palindrome (4331242421334).

The spelling of 2211221200212 in words is "two trillion, two hundred eleven billion, two hundred twenty-one million, two hundred thousand, two hundred twelve".