4542223221 has 12 divisors (see below), whose sum is σ = 6568397472. Its totient is φ = 3024729576.

The previous prime is 4542223219. The next prime is 4542223237. The reversal of 4542223221 is 1223222454.

4542223221 is a `hidden beast` number, since 4 + 5 + 422 + 232 + 2 + 1 = 666.

It is not a de Polignac number, because 4542223221 - 2¹ = 4542223219 is a prime.

It is a super-2 number, since 2×4542223221² = 41263583578783229682, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4542223121) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 276511 + ... + 292476.

It is an arithmetic number, because the mean of its divisors is an integer number (547366456).

Almost surely, 2^4542223221 is an apocalyptic number.

It is an amenable number.

4542223221 is a deficient number, since it is larger than the sum of its proper divisors (2026174251).

4542223221 is a wasteful number, since it uses less digits than its factorization.

4542223221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 569880 (or 569877 counting only the distinct ones).

The product of its digits is 7680, while the sum is 27.

The square root of 4542223221 is about 67396.0178423028. The cubic root of 4542223221 is about 1656.1111878803. Note that the first 4 decimals are identical.

Adding to 4542223221 its reverse (1223222454), we get a palindrome (5765445675).

The spelling of 4542223221 in words is "four billion, five hundred forty-two million, two hundred twenty-three thousand, two hundred twenty-one".