2211201022212 has 288 divisors, whose sum is σ = 7268701370112. Its totient is φ = 572169401856.

The previous prime is 2211201022201. The next prime is 2211201022279. The reversal of 2211201022212 is 2122201021122.

It is a happy number.

2211201022212 is a `hidden beast` number, since 221 + 120 + 102 + 221 + 2 = 666.

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

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 4452118 + ... + 4923794.

It is an arithmetic number, because the mean of its divisors is an integer number (25238546424).

Almost surely, 2^{2211201022212} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2211201022212, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3634350685056).

2211201022212 is an abundant number, since it is smaller than the sum of its proper divisors (5057500347900).

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

2211201022212 is a wasteful number, since it uses less digits than its factorization.

2211201022212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 471769 (or 471755 counting only the distinct ones).

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

Adding to 2211201022212 its reverse (2122201021122), we get a palindrome (4333402043334).

The spelling of 2211201022212 in words is "two trillion, two hundred eleven billion, two hundred one million, twenty-two thousand, two hundred twelve".