12211642 has 8 divisors (see below), whose sum is σ = 19281600. Its totient is φ = 5784444.

The previous prime is 12211603. The next prime is 12211657. The reversal of 12211642 is 24611221.

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

It is a Harshad number since it is a multiple of its sum of digits (19).

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 160642 + ... + 160717.

It is an arithmetic number, because the mean of its divisors is an integer number (2410200).

Almost surely, 2^12211642 is an apocalyptic number.

12211642 is a deficient number, since it is larger than the sum of its proper divisors (7069958).

12211642 is a wasteful number, since it uses less digits than its factorization.

12211642 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 321380.

The product of its digits is 192, while the sum is 19.

The square root of 12211642 is about 3494.5159893754. The cubic root of 12211642 is about 230.2809547088.

Adding to 12211642 its reverse (24611221), we get a palindrome (36822863).

The spelling of 12211642 in words is "twelve million, two hundred eleven thousand, six hundred forty-two".