1122279 has 4 divisors (see below), whose sum is σ = 1496376. Its totient is φ = 748184.

The previous prime is 1122269. The next prime is 1122281. The reversal of 1122279 is 9722211.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 9722211 = 3 ⋅3240737.

It is a cyclic number.

It is not a de Polignac number, because 1122279 - 2⁴ = 1122263 is a prime.

It is a D-number.

It is a plaindrome in base 10.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1122259) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 187044 + ... + 187049.

It is an arithmetic number, because the mean of its divisors is an integer number (374094).

2^1122279 is an apocalyptic number.

1122279 is a deficient number, since it is larger than the sum of its proper divisors (374097).

1122279 is an equidigital number, since it uses as much as digits as its factorization.

1122279 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 374096.

The product of its digits is 504, while the sum is 24.

The square root of 1122279 is about 1059.3767035385. The cubic root of 1122279 is about 103.9202729694.

The spelling of 1122279 in words is "one million, one hundred twenty-two thousand, two hundred seventy-nine".