2212123222345 has 8 divisors (see below), whose sum is σ = 2684374247880. Its totient is φ = 1749814323840.

The previous prime is 2212123222321. The next prime is 2212123222357. The reversal of 2212123222345 is 5432223212122.

It can be written as a sum of positive squares in 4 ways, for example, as 85729081 + 2212037493264 = 9259^2 + 1487292^2 .

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

It is not a de Polignac number, because 2212123222345 - 2¹¹ = 2212123220297 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2485531266 + ... + 2485532155.

It is an arithmetic number, because the mean of its divisors is an integer number (335546780985).

Almost surely, 2^{2212123222345} is an apocalyptic number.

It is an amenable number.

2212123222345 is a deficient number, since it is larger than the sum of its proper divisors (472251025535).

2212123222345 is an equidigital number, since it uses as much as digits as its factorization.

2212123222345 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4971063515.

The product of its digits is 23040, while the sum is 31.

Adding to 2212123222345 its reverse (5432223212122), we get a palindrome (7644346434467).

The spelling of 2212123222345 in words is "two trillion, two hundred twelve billion, one hundred twenty-three million, two hundred twenty-two thousand, three hundred forty-five".