2221102012112 has 20 divisors (see below), whose sum is σ = 4556525451876. Its totient is φ = 1045224476160.

The previous prime is 2221102012111. The next prime is 2221102012117. The reversal of 2221102012112 is 2112102011222.

It can be written as a sum of positive squares in 2 ways, for example, as 1337945636416 + 883156375696 = 1156696^2 + 939764^2 .

It is a Harshad number since it is a multiple of its sum of digits (17).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2221102012111) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4082907839 + ... + 4082908382.

Almost surely, 2^{2221102012112} is an apocalyptic number.

It is an amenable number.

2221102012112 is an abundant number, since it is smaller than the sum of its proper divisors (2335423439764).

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

2221102012112 is a wasteful number, since it uses less digits than its factorization.

2221102012112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8165816246 (or 8165816240 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 17.

Adding to 2221102012112 its reverse (2112102011222), we get a palindrome (4333204023334).

The spelling of 2221102012112 in words is "two trillion, two hundred twenty-one billion, one hundred two million, twelve thousand, one hundred twelve".