12021322 has 4 divisors (see below), whose sum is σ = 18031986. Its totient is φ = 6010660.

The previous prime is 12021311. The next prime is 12021353. The reversal of 12021322 is 22312021.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 22312021 = 241 ⋅92581.

It can be written as a sum of positive squares in only one way, i.e., 9979281 + 2042041 = 3159^2 + 1429^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3005329 + ... + 3005332.

Almost surely, 2^12021322 is an apocalyptic number.

12021322 is a deficient number, since it is larger than the sum of its proper divisors (6010664).

12021322 is an equidigital number, since it uses as much as digits as its factorization.

12021322 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6010663.

The product of its (nonzero) digits is 48, while the sum is 13.

The square root of 12021322 is about 3467.1778148806. The cubic root of 12021322 is about 229.0783660399.

Adding to 12021322 its reverse (22312021), we get a palindrome (34333343).

The spelling of 12021322 in words is "twelve million, twenty-one thousand, three hundred twenty-two".