4222912181 has 4 divisors (see below), whose sum is σ = 4247322252. Its totient is φ = 4198502112.

The previous prime is 4222912159. The next prime is 4222912189. The reversal of 4222912181 is 1812192224.

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 2082461956 + 2140450225 = 45634^2 + 46265^2 .

It is a cyclic number.

It is not a de Polignac number, because 4222912181 - 2¹⁸ = 4222650037 is a prime.

It is a super-2 number, since 2×4222912181² = 35665974576876353522, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4222912189) 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 3 ways as a sum of consecutive naturals, for example, 12204776 + ... + 12205121.

It is an arithmetic number, because the mean of its divisors is an integer number (1061830563).

Almost surely, 2^4222912181 is an apocalyptic number.

It is an amenable number.

4222912181 is a deficient number, since it is larger than the sum of its proper divisors (24410071).

4222912181 is a wasteful number, since it uses less digits than its factorization.

4222912181 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24410070.

The product of its digits is 4608, while the sum is 32.

The square root of 4222912181 is about 64983.9378692920. The cubic root of 4222912181 is about 1616.3572293627.

The spelling of 4222912181 in words is "four billion, two hundred twenty-two million, nine hundred twelve thousand, one hundred eighty-one".