12021963 has 4 divisors (see below), whose sum is σ = 16029288. Its totient is φ = 8014640.

The previous prime is 12021959. The next prime is 12021973. The reversal of 12021963 is 36912021.

12021963 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

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

It is a cyclic number.

It is not a de Polignac number, because 12021963 - 2² = 12021959 is a prime.

It is not an unprimeable number, because it can be changed into a prime (12021913) 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, 2003658 + ... + 2003663.

It is an arithmetic number, because the mean of its divisors is an integer number (4007322).

Almost surely, 2^12021963 is an apocalyptic number.

12021963 is a deficient number, since it is larger than the sum of its proper divisors (4007325).

12021963 is an equidigital number, since it uses as much as digits as its factorization.

12021963 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4007324.

The product of its (nonzero) digits is 648, while the sum is 24.

The square root of 12021963 is about 3467.2702519417. The cubic root of 12021963 is about 229.0824376005.

Adding to 12021963 its reverse (36912021), we get a palindrome (48933984).

The spelling of 12021963 in words is "twelve million, twenty-one thousand, nine hundred sixty-three".