3122216642 has 8 divisors (see below), whose sum is σ = 4695881916. Its totient is φ = 1556922672.

The previous prime is 3122216611. The next prime is 3122216663. The reversal of 3122216642 is 2466122213.

3122216642 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 3030612601 + 91604041 = 55051^2 + 9571^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2091893 + ... + 2093384.

Almost surely, 2^3122216642 is an apocalyptic number.

3122216642 is a deficient number, since it is larger than the sum of its proper divisors (1573665274).

3122216642 is a wasteful number, since it uses less digits than its factorization.

3122216642 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4185652.

The product of its digits is 6912, while the sum is 29.

The square root of 3122216642 is about 55876.7987808894. The cubic root of 3122216642 is about 1461.5746821391.

Adding to 3122216642 its reverse (2466122213), we get a palindrome (5588338855).

The spelling of 3122216642 in words is "three billion, one hundred twenty-two million, two hundred sixteen thousand, six hundred forty-two".