2221022122112 has 32 divisors (see below), whose sum is σ = 4577268120300. Its totient is φ = 1072217574400.

The previous prime is 2221022122079. The next prime is 2221022122133. The reversal of 2221022122112 is 2112212201222.

It can be written as a sum of positive squares in 2 ways, for example, as 2217883433536 + 3138688576 = 1489256^2 + 56024^2 .

It is a tau number, because it is divible by the number of its divisors (32).

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 299164139 + ... + 299171562.

Almost surely, 2^{2221022122112} is an apocalyptic number.

It is an amenable number.

2221022122112 is an abundant number, since it is smaller than the sum of its proper divisors (2356245998188).

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

2221022122112 is an equidigital number, since it uses as much as digits as its factorization.

2221022122112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 598335744 (or 598335732 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 20.

Adding to 2221022122112 its reverse (2112212201222), we get a palindrome (4333234323334).

The spelling of 2221022122112 in words is "two trillion, two hundred twenty-one billion, twenty-two million, one hundred twenty-two thousand, one hundred twelve".