2112221012 has 18 divisors (see below), whose sum is σ = 4062971514. Its totient is φ = 960100240.

The previous prime is 2112221011. The next prime is 2112221021. The reversal of 2112221012 is 2101222112.

It can be written as a sum of positive squares in only one way, i.e., 1545590596 + 566630416 = 39314^2 + 23804^2 .

It is a super-2 number, since 2×2112221012² = 8922955207068608288, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2112221011) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2181563 + ... + 2182530.

Almost surely, 2^2112221012 is an apocalyptic number.

2112221012 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

2112221012 is a deficient number, since it is larger than the sum of its proper divisors (1950750502).

2112221012 is a wasteful number, since it uses less digits than its factorization.

2112221012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4364119 (or 4364106 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 14.

The square root of 2112221012 is about 45958.9056875814. The cubic root of 2112221012 is about 1283.0584844510.

Adding to 2112221012 its reverse (2101222112), we get a palindrome (4213443124).

The spelling of 2112221012 in words is "two billion, one hundred twelve million, two hundred twenty-one thousand, twelve".