2221269 has 4 divisors (see below), whose sum is σ = 2961696. Its totient is φ = 1480844.

The previous prime is 2221259. The next prime is 2221273. The reversal of 2221269 is 9621222.

2221269 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, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 2221269 - 2⁴ = 2221253 is a prime.

It is a super-2 number, since 2×2221269² = 9868071940722, which contains 22 as substring.

It is a D-number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2221229) 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, 370209 + ... + 370214.

It is an arithmetic number, because the mean of its divisors is an integer number (740424).

2^2221269 is an apocalyptic number.

It is an amenable number.

2221269 is a deficient number, since it is larger than the sum of its proper divisors (740427).

2221269 is an equidigital number, since it uses as much as digits as its factorization.

2221269 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 740426.

The product of its digits is 864, while the sum is 24.

The square root of 2221269 is about 1490.3922302535. The cubic root of 2221269 is about 130.4769266763.

The spelling of 2221269 in words is "two million, two hundred twenty-one thousand, two hundred sixty-nine".