2221211210112 has 128 divisors (see below), whose sum is σ = 6561700147200. Its totient is φ = 739721341440.

The previous prime is 2221211210081. The next prime is 2221211210123. The reversal of 2221211210112 is 2110121121222.

2221211210112 is a `hidden beast` number, since 222 + 121 + 1 + 210 + 112 = 666.

It is a tau number, because it is divible by the number of its divisors (128).

It is a super-2 number, since 2×2221211210112² (a number of 25 digits) contains 22 as substring.

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 15 ways as a sum of consecutive naturals, for example, 3461037 + ... + 4052307.

It is an arithmetic number, because the mean of its divisors is an integer number (51263282400).

Almost surely, 2^{2221211210112} 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 2221211210112, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3280850073600).

2221211210112 is an abundant number, since it is smaller than the sum of its proper divisors (4340488937088).

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

2221211210112 is a wasteful number, since it uses less digits than its factorization.

2221211210112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 592381 (or 592363 counting only the distinct ones).

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

Adding to 2221211210112 its reverse (2110121121222), we get a palindrome (4331332331334).

The spelling of 2221211210112 in words is "two trillion, two hundred twenty-one billion, two hundred eleven million, two hundred ten thousand, one hundred twelve".