312220222101 has 6 divisors (see below), whose sum is σ = 450984765270. Its totient is φ = 208146814728.

The previous prime is 312220222091. The next prime is 312220222121. The reversal of 312220222101 is 101222022213.

It can be written as a sum of positive squares in only one way, i.e., 264580611876 + 47639610225 = 514374^2 + 218265^2 .

It is not a de Polignac number, because 312220222101 - 2²¹ = 312218124949 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (312220222121) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 17345567886 + ... + 17345567903.

It is an arithmetic number, because the mean of its divisors is an integer number (75164127545).

Almost surely, 2^312220222101 is an apocalyptic number.

It is an amenable number.

312220222101 is a deficient number, since it is larger than the sum of its proper divisors (138764543169).

312220222101 is a wasteful number, since it uses less digits than its factorization.

312220222101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34691135795 (or 34691135792 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 18.

Adding to 312220222101 its reverse (101222022213), we get a palindrome (413442244314).

The spelling of 312220222101 in words is "three hundred twelve billion, two hundred twenty million, two hundred twenty-two thousand, one hundred one".