31022222122 has 8 divisors (see below), whose sum is σ = 46534632516. Its totient is φ = 15510677952.

The previous prime is 31022222111. The next prime is 31022222123. The reversal of 31022222122 is 22122222013.

It can be written as a sum of positive squares in 2 ways, for example, as 30491795161 + 530426961 = 174619^2 + 23031^2 .

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

It is a self number, because there is not a number n which added to its sum of digits gives 31022222122.

It is not an unprimeable number, because it can be changed into a prime (31022222123) 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, 118063 + ... + 275650.

Almost surely, 2^31022222122 is an apocalyptic number.

31022222122 is a deficient number, since it is larger than the sum of its proper divisors (15512410394).

31022222122 is a wasteful number, since it uses less digits than its factorization.

31022222122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 433112.

The product of its (nonzero) digits is 384, while the sum is 19.

Adding to 31022222122 its reverse (22122222013), we get a palindrome (53144444135).

The spelling of 31022222122 in words is "thirty-one billion, twenty-two million, two hundred twenty-two thousand, one hundred twenty-two".