2212779 has 4 divisors (see below), whose sum is σ = 2950376. Its totient is φ = 1475184.

The previous prime is 2212753. The next prime is 2212781. The reversal of 2212779 is 9772122.

It is a happy number.

2212779 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 2212779 - 2⁵ = 2212747 is a prime.

It is a D-number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2212709) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 368794 + ... + 368799.

It is an arithmetic number, because the mean of its divisors is an integer number (737594).

2^2212779 is an apocalyptic number.

2212779 is a deficient number, since it is larger than the sum of its proper divisors (737597).

2212779 is an equidigital number, since it uses as much as digits as its factorization.

2212779 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 737596.

The product of its digits is 3528, while the sum is 30.

The square root of 2212779 is about 1487.5412599320. The cubic root of 2212779 is about 130.3104807639.

The spelling of 2212779 in words is "two million, two hundred twelve thousand, seven hundred seventy-nine".