2221158 has 8 divisors (see below), whose sum is σ = 4442328. Its totient is φ = 740384.

The previous prime is 2221129. The next prime is 2221159. The reversal of 2221158 is 8511222.

It is a happy number.

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

2221158 is an admirable number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2221159) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 185091 + ... + 185102.

It is an arithmetic number, because the mean of its divisors is an integer number (555291).

2^2221158 is an apocalyptic number.

2221158 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2221158 is a wasteful number, since it uses less digits than its factorization.

2221158 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 370198.

The product of its digits is 320, while the sum is 21.

The square root of 2221158 is about 1490.3549912689. The cubic root of 2221158 is about 130.4747532670.

Subtracting 2221158 from its reverse (8511222), we obtain a square (6290064 = 2508²).

The spelling of 2221158 in words is "two million, two hundred twenty-one thousand, one hundred fifty-eight".