12220993 has 8 divisors (see below), whose sum is σ = 12569760. Its totient is φ = 11874720.

The previous prime is 12220991. The next prime is 12220997. The reversal of 12220993 is 39902221.

12220993 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 12220993 - 2¹ = 12220991 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12220991) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13798 + ... + 14656.

It is an arithmetic number, because the mean of its divisors is an integer number (1571220).

Almost surely, 2^12220993 is an apocalyptic number.

It is an amenable number.

12220993 is a deficient number, since it is larger than the sum of its proper divisors (348767).

12220993 is an equidigital number, since it uses as much as digits as its factorization.

12220993 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1247.

The product of its (nonzero) digits is 1944, while the sum is 28.

The square root of 12220993 is about 3495.8536868696. The cubic root of 12220993 is about 230.3397185180.

It can be divided in two parts, 122 and 20993, that added together give a triangular number (21115 = T₂₀₅).

The spelling of 12220993 in words is "twelve million, two hundred twenty thousand, nine hundred ninety-three".