2142222 has 16 divisors (see below), whose sum is σ = 4298832. Its totient is φ = 711680.

The previous prime is 2142211. The next prime is 2142227. The reversal of 2142222 is 2222412.

2142222 is a modest number, since divided by 2222 gives 214 as remainder.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2142227) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3022 + ... + 3662.

It is an arithmetic number, because the mean of its divisors is an integer number (268677).

2^2142222 is an apocalyptic number.

2142222 is an abundant number, since it is smaller than the sum of its proper divisors (2156610).

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

2142222 is a wasteful number, since it uses less digits than its factorization.

2142222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1203.

The product of its digits is 128, while the sum is 15.

The square root of 2142222 is about 1463.6331507588. The cubic root of 2142222 is about 128.9104600682.

Adding to 2142222 its reverse (2222412), we get a palindrome (4364634).

The spelling of 2142222 in words is "two million, one hundred forty-two thousand, two hundred twenty-two".