2112245340 has 24 divisors (see below), whose sum is σ = 5914287120. Its totient is φ = 563265408.

The previous prime is 2112245323. The next prime is 2112245341. The reversal of 2112245340 is 435422112.

It is a self number, because there is not a number n which added to its sum of digits gives 2112245340.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2112245341) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 17601985 + ... + 17602104.

It is an arithmetic number, because the mean of its divisors is an integer number (246428630).

Almost surely, 2^2112245340 is an apocalyptic number.

2112245340 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2112245340 is an abundant number, since it is smaller than the sum of its proper divisors (3802041780).

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

2112245340 is a wasteful number, since it uses less digits than its factorization.

2112245340 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35204101 (or 35204099 counting only the distinct ones).

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

The square root of 2112245340 is about 45959.1703580472. The cubic root of 2112245340 is about 1283.0634104076.

Adding to 2112245340 its reverse (435422112), we get a palindrome (2547667452).

The spelling of 2112245340 in words is "two billion, one hundred twelve million, two hundred forty-five thousand, three hundred forty".