12220011 has 16 divisors (see below), whose sum is σ = 18160000. Its totient is φ = 8121384.

The previous prime is 12220003. The next prime is 12220031. The reversal of 12220011 is 11002221.

It is not a de Polignac number, because 12220011 - 2³ = 12220003 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (9).

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12219975 and 12220002.

It is not an unprimeable number, because it can be changed into a prime (12220031) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 13020 + ... + 13926.

It is an arithmetic number, because the mean of its divisors is an integer number (1135000).

Almost surely, 2^12220011 is an apocalyptic number.

12220011 is a deficient number, since it is larger than the sum of its proper divisors (5939989).

12220011 is an equidigital number, since it uses as much as digits as its factorization.

12220011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1415 (or 1409 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 9.

The square root of 12220011 is about 3495.7132319457. The cubic root of 12220011 is about 230.3335488158. Note that the first 3 decimals are identical.

Adding to 12220011 its reverse (11002221), we get a palindrome (23222232).

The spelling of 12220011 in words is "twelve million, two hundred twenty thousand, eleven".