2142222004 has 24 divisors (see below), whose sum is σ = 4146383528. Its totient is φ = 961994880.

The previous prime is 2142221993. The next prime is 2142222007. The reversal of 2142222004 is 4002222412.

It can be written as a sum of positive squares in 4 ways, for example, as 85599504 + 2056622500 = 9252^2 + 45350^2 .

It is a super-2 number, since 2×2142222004² = 9178230228843552032, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2142222007) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 554787 + ... + 558634.

Almost surely, 2^2142222004 is an apocalyptic number.

It is an amenable number.

2142222004 is a deficient number, since it is larger than the sum of its proper divisors (2004161524).

2142222004 is a wasteful number, since it uses less digits than its factorization.

2142222004 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1113475 (or 1113473 counting only the distinct ones).

The product of its (nonzero) digits is 512, while the sum is 19.

The square root of 2142222004 is about 46284.1441964740. The cubic root of 2142222004 is about 1289.1046014843.

Adding to 2142222004 its reverse (4002222412), we get a palindrome (6144444416).

The spelling of 2142222004 in words is "two billion, one hundred forty-two million, two hundred twenty-two thousand, four".