12021370 has 16 divisors (see below), whose sum is σ = 22385160. Its totient is φ = 4642624.

The previous prime is 12021367. The next prime is 12021403. The reversal of 12021370 is 7312021.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 7017201 + 5004169 = 2649^2 + 2237^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 20437 + ... + 21016.

Almost surely, 2^12021370 is an apocalyptic number.

12021370 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

12021370 is a deficient number, since it is larger than the sum of its proper divisors (10363790).

12021370 is a wasteful number, since it uses less digits than its factorization.

12021370 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41489.

The product of its (nonzero) digits is 84, while the sum is 16.

The square root of 12021370 is about 3467.1847369299. The cubic root of 12021370 is about 229.0786709355.

Adding to 12021370 its reverse (7312021), we get a palindrome (19333391).

The spelling of 12021370 in words is "twelve million, twenty-one thousand, three hundred seventy".