5042222221 has 4 divisors (see below), whose sum is σ = 5043034332. Its totient is φ = 5041410112.

The previous prime is 5042222197. The next prime is 5042222233. The reversal of 5042222221 is 1222222405.

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

It can be written as a sum of positive squares in 2 ways, for example, as 4707880996 + 334341225 = 68614^2 + 18285^2 .

It is a cyclic number.

It is not a de Polignac number, because 5042222221 - 2⁷ = 5042222093 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 5042222192 and 5042222201.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5042222621) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 396670 + ... + 409183.

It is an arithmetic number, because the mean of its divisors is an integer number (1260758583).

Almost surely, 2^5042222221 is an apocalyptic number.

It is an amenable number.

5042222221 is a deficient number, since it is larger than the sum of its proper divisors (812111).

5042222221 is an equidigital number, since it uses as much as digits as its factorization.

5042222221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 812110.

The product of its (nonzero) digits is 1280, while the sum is 22.

The square root of 5042222221 is about 71008.6066684877. The cubic root of 5042222221 is about 1714.7757269194.

Adding to 5042222221 its reverse (1222222405), we get a palindrome (6264444626).

The spelling of 5042222221 in words is "five billion, forty-two million, two hundred twenty-two thousand, two hundred twenty-one".