12222779 has 8 divisors (see below), whose sum is σ = 13010400. Its totient is φ = 11442816.

The previous prime is 12222767. The next prime is 12222781. The reversal of 12222779 is 97722221.

12222779 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 12222779 - 2⁸ = 12222523 is a prime.

It is a Duffinian number.

It is a plaindrome in base 10.

It is not an unprimeable number, because it can be changed into a prime (12222709) 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, 1577 + ... + 5189.

It is an arithmetic number, because the mean of its divisors is an integer number (1626300).

Almost surely, 2^12222779 is an apocalyptic number.

12222779 is a deficient number, since it is larger than the sum of its proper divisors (787621).

12222779 is a wasteful number, since it uses less digits than its factorization.

12222779 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3829.

The product of its digits is 7056, while the sum is 32.

The square root of 12222779 is about 3496.1091230109. The cubic root of 12222779 is about 230.3509387383.

The spelling of 12222779 in words is "twelve million, two hundred twenty-two thousand, seven hundred seventy-nine".