12210993 has 24 divisors (see below), whose sum is σ = 18893056. Its totient is φ = 7873200.

The previous prime is 12210983. The next prime is 12211009. The reversal of 12210993 is 39901221.

12210993 is digitally balanced in base 2 and base 4, because in such bases it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 12210993 - 2¹⁰ = 12209969 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a Duffinian number.

It is a Curzon number.

It is a nialpdrome in base 16.

It is not an unprimeable number, because it can be changed into a prime (12210973) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 6723 + ... + 8343.

Almost surely, 2^12210993 is an apocalyptic number.

It is an amenable number.

12210993 is a deficient number, since it is larger than the sum of its proper divisors (6682063).

12210993 is an equidigital number, since it uses as much as digits as its factorization.

12210993 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1667 (or 1655 counting only the distinct ones).

The product of its (nonzero) digits is 972, while the sum is 27.

The square root of 12210993 is about 3494.4231283575. The cubic root of 12210993 is about 230.2768751322.

It can be divided in two parts, 12210 and 993, that added together give a triangular number (13203 = T₁₆₂).

The spelling of 12210993 in words is "twelve million, two hundred ten thousand, nine hundred ninety-three".