2221111112 has 32 divisors (see below), whose sum is σ = 4558740480. Its totient is φ = 1006138560.

The previous prime is 2221111103. The next prime is 2221111129. The reversal of 2221111112 is 2111111222.

It is a nude number because it is divisible by every one of its digits.

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, 17288 + ... + 68855.

It is an arithmetic number, because the mean of its divisors is an integer number (142460640).

Almost surely, 2^2221111112 is an apocalyptic number.

2221111112 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

2221111112 is an abundant number, since it is smaller than the sum of its proper divisors (2337629368).

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

2221111112 is a wasteful number, since it uses less digits than its factorization.

2221111112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 86453 (or 86449 counting only the distinct ones).

The product of its digits is 16, while the sum is 14.

The square root of 2221111112 is about 47128.6655020063. The cubic root of 2221111112 is about 1304.7383516581.

Adding to 2221111112 its reverse (2111111222), we get a palindrome (4332222334).

It can be divided in two parts, 22 and 21111112, that multiplied together give a palindrome (464444464).

The spelling of 2221111112 in words is "two billion, two hundred twenty-one million, one hundred eleven thousand, one hundred twelve".