2142221223 has 4 divisors (see below), whose sum is σ = 2856294968. Its totient is φ = 1428147480.

The previous prime is 2142221183. The next prime is 2142221233. The reversal of 2142221223 is 3221222412.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 2142221223 - 2¹² = 2142217127 is a prime.

It is a super-2 number, since 2×2142221223² = 9178223536543231458, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 2142221223.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2142221233) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 357036868 + ... + 357036873.

It is an arithmetic number, because the mean of its divisors is an integer number (714073742).

Almost surely, 2^2142221223 is an apocalyptic number.

2142221223 is a deficient number, since it is larger than the sum of its proper divisors (714073745).

2142221223 is an equidigital number, since it uses as much as digits as its factorization.

2142221223 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 714073744.

The product of its digits is 768, while the sum is 21.

The square root of 2142221223 is about 46284.1357594587. The cubic root of 2142221223 is about 1289.1044448259.

Adding to 2142221223 its reverse (3221222412), we get a palindrome (5363443635).

The spelling of 2142221223 in words is "two billion, one hundred forty-two million, two hundred twenty-one thousand, two hundred twenty-three".