12018622 has 24 divisors (see below), whose sum is σ = 22879800. Its totient is φ = 4682160.

The previous prime is 12018613. The next prime is 12018623. The reversal of 12018622 is 22681021.

It is a Harshad number since it is a multiple of its sum of digits (22).

It is a junction number, because it is equal to n+sod(n) for n = 12018593 and 12018602.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12018623) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 4497 + ... + 6652.

It is an arithmetic number, because the mean of its divisors is an integer number (953325).

Almost surely, 2^12018622 is an apocalyptic number.

12018622 is a deficient number, since it is larger than the sum of its proper divisors (10861178).

12018622 is a wasteful number, since it uses less digits than its factorization.

12018622 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11176 (or 11169 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 22.

The square root of 12018622 is about 3466.7884273489. The cubic root of 12018622 is about 229.0612143517.

Adding to 12018622 its reverse (22681021), we get a palindrome (34699643).

The spelling of 12018622 in words is "twelve million, eighteen thousand, six hundred twenty-two".