2221093 has 16 divisors (see below), whose sum is σ = 2661120. Its totient is φ = 1814400.

The previous prime is 2221069. The next prime is 2221097. The reversal of 2221093 is 3901222.

It is a happy number.

It is not a de Polignac number, because 2221093 - 2⁵ = 2221061 is a prime.

It is a super-2 number, since 2×2221093² = 9866508229298, which contains 22 as substring.

It is an Ulam number.

It is a self number, because there is not a number n which added to its sum of digits gives 2221093.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2221097) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 20323 + ... + 20431.

It is an arithmetic number, because the mean of its divisors is an integer number (166320).

2^2221093 is an apocalyptic number.

It is an amenable number.

2221093 is a deficient number, since it is larger than the sum of its proper divisors (440027).

2221093 is a wasteful number, since it uses less digits than its factorization.

2221093 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 228.

The product of its (nonzero) digits is 216, while the sum is 19.

The square root of 2221093 is about 1490.3331842243. Note that the first 3 decimals coincide. The cubic root of 2221093 is about 130.4734805162.

It can be divided in two parts, 22 and 21093, that added together give a triangular number (21115 = T₂₀₅).

The spelling of 2221093 in words is "two million, two hundred twenty-one thousand, ninety-three".