2112221142 has 12 divisors (see below), whose sum is σ = 4576479180. Its totient is φ = 704073708.

The previous prime is 2112221129. The next prime is 2112221147. The reversal of 2112221142 is 2411222112.

It is a super-2 number, since 2×2112221142² = 8922956305423568328, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (18), and also a Moran number because the ratio is a prime number: 117345619 = 2112221142 / (2 + 1 + 1 + 2 + 2 + 2 + 1 + 1 + 4 + 2).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2112221147) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 58672792 + ... + 58672827.

It is an arithmetic number, because the mean of its divisors is an integer number (381373265).

Almost surely, 2^2112221142 is an apocalyptic number.

2112221142 is an abundant number, since it is smaller than the sum of its proper divisors (2464258038).

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

2112221142 is a wasteful number, since it uses less digits than its factorization.

2112221142 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 117345627 (or 117345624 counting only the distinct ones).

The product of its digits is 128, while the sum is 18.

The square root of 2112221142 is about 45958.9071018883. The cubic root of 2112221142 is about 1283.0585107737.

Adding to 2112221142 its reverse (2411222112), we get a palindrome (4523443254).

The spelling of 2112221142 in words is "two billion, one hundred twelve million, two hundred twenty-one thousand, one hundred forty-two".