2112223542 has 64 divisors (see below), whose sum is σ = 4989358080. Its totient is φ = 587692800.

The previous prime is 2112223513. The next prime is 2112223573. The reversal of 2112223542 is 2453222112.

It is a super-2 number, since 2×2112223542² = 8922976582758051528, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 157434 + ... + 170322.

It is an arithmetic number, because the mean of its divisors is an integer number (77958720).

Almost surely, 2^2112223542 is an apocalyptic number.

2112223542 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 2112223542, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2494679040).

2112223542 is an abundant number, since it is smaller than the sum of its proper divisors (2877134538).

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

2112223542 is a wasteful number, since it uses less digits than its factorization.

2112223542 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13109.

The product of its digits is 1920, while the sum is 24.

The square root of 2112223542 is about 45958.9332121624. The cubic root of 2112223542 is about 1283.0589967296.

Adding to 2112223542 its reverse (2453222112), we get a palindrome (4565445654).

The spelling of 2112223542 in words is "two billion, one hundred twelve million, two hundred twenty-three thousand, five hundred forty-two".