2221123112 has 32 divisors (see below), whose sum is σ = 4546413480. Its totient is φ = 1011087360.

The previous prime is 2221123109. The next prime is 2221123127. The reversal of 2221123112 is 2113211222.

It can be written as a sum of positive squares in 4 ways, for example, as 2116552036 + 104571076 = 46006^2 + 10226^2 .

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, 138689 + ... + 153872.

Almost surely, 2^2221123112 is an apocalyptic number.

It is an amenable number.

2221123112 is an abundant number, since it is smaller than the sum of its proper divisors (2325290368).

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

2221123112 is a wasteful number, since it uses less digits than its factorization.

2221123112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 292653 (or 292649 counting only the distinct ones).

The product of its digits is 96, while the sum is 17.

The square root of 2221123112 is about 47128.7928128867. The cubic root of 2221123112 is about 1304.7407013577.

Adding to 2221123112 its reverse (2113211222), we get a palindrome (4334334334).

The spelling of 2221123112 in words is "two billion, two hundred twenty-one million, one hundred twenty-three thousand, one hundred twelve".