2112303421 has 4 divisors (see below), whose sum is σ = 2185141500. Its totient is φ = 2039465344.

The previous prime is 2112303409. The next prime is 2112303517. The reversal of 2112303421 is 1243032112.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 1009332900 + 1102970521 = 31770^2 + 33211^2 .

It is a cyclic number.

It is not a de Polignac number, because 2112303421 - 2⁷ = 2112303293 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2112303121) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 36418996 + ... + 36419053.

It is an arithmetic number, because the mean of its divisors is an integer number (546285375).

Almost surely, 2^2112303421 is an apocalyptic number.

It is an amenable number.

2112303421 is a deficient number, since it is larger than the sum of its proper divisors (72838079).

2112303421 is an equidigital number, since it uses as much as digits as its factorization.

2112303421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 72838078.

The product of its (nonzero) digits is 288, while the sum is 19.

The square root of 2112303421 is about 45959.8022297747. The cubic root of 2112303421 is about 1283.0751705508.

Adding to 2112303421 its reverse (1243032112), we get a palindrome (3355335533).

The spelling of 2112303421 in words is "two billion, one hundred twelve million, three hundred three thousand, four hundred twenty-one".