2221000122112 has 72 divisors (see below), whose sum is σ = 4465159902000. Its totient is φ = 1102532616192.

The previous prime is 2221000122091. The next prime is 2221000122139. The reversal of 2221000122112 is 2112210001222.

It is a happy number.

It is a super-2 number, since 2×2221000122112² (a number of 25 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (16).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 89511564 + ... + 89536372.

It is an arithmetic number, because the mean of its divisors is an integer number (62016109750).

Almost surely, 2^{2221000122112} 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 2221000122112, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2232579951000).

2221000122112 is an abundant number, since it is smaller than the sum of its proper divisors (2244159779888).

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

2221000122112 is a wasteful number, since it uses less digits than its factorization.

2221000122112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27321 (or 27307 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 2221000122112 its reverse (2112210001222), we get a palindrome (4333210123334).

The spelling of 2221000122112 in words is "two trillion, two hundred twenty-one billion, one hundred twenty-two thousand, one hundred twelve".