2221922 has 12 divisors (see below), whose sum is σ = 3454386. Its totient is φ = 1071840.

The previous prime is 2221909. The next prime is 2221931. The reversal of 2221922 is 2291222.

2221922 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 3 ways, for example, as 2193361 + 28561 = 1481^2 + 169^2 .

It is a hoax number, since the sum of its digits (20) coincides with the sum of the digits of its distinct prime factors.

It is an Ulam number.

It is a junction number, because it is equal to n+sod(n) for n = 2221894 and 2221903.

It is an unprimeable number.

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 5 ways as a sum of consecutive naturals, for example, 1022 + ... + 2342.

2^2221922 is an apocalyptic number.

2221922 is a deficient number, since it is larger than the sum of its proper divisors (1232464).

2221922 is a wasteful number, since it uses less digits than its factorization.

2221922 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1381 (or 1352 counting only the distinct ones).

The product of its digits is 288, while the sum is 20.

The square root of 2221922 is about 1490.6112840040. The cubic root of 2221922 is about 130.4897111230.

It can be divided in two parts, 22 and 21922, that multiplied together give a palindrome (482284).

The spelling of 2221922 in words is "two million, two hundred twenty-one thousand, nine hundred twenty-two".