2212131312123 has 8 divisors (see below), whose sum is σ = 2951341554000. Its totient is φ = 1473837639168.

The previous prime is 2212131312121. The next prime is 2212131312137. The reversal of 2212131312123 is 3212131312122.

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

It is not a de Polignac number, because 2212131312123 - 2¹ = 2212131312121 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2212131312093 and 2212131312102.

It is not an unprimeable number, because it can be changed into a prime (2212131312121) 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 7 ways as a sum of consecutive naturals, for example, 229136598 + ... + 229146251.

It is an arithmetic number, because the mean of its divisors is an integer number (368917694250).

Almost surely, 2^{2212131312123} is an apocalyptic number.

2212131312123 is a deficient number, since it is larger than the sum of its proper divisors (739210241877).

2212131312123 is a wasteful number, since it uses less digits than its factorization.

2212131312123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 458284461.

The product of its digits is 864, while the sum is 24.

Adding to 2212131312123 its reverse (3212131312122), we get a palindrome (5424262624245).

Subtracting 2212131312123 from its reverse (3212131312122), we obtain a palindrome (999999999999).

The spelling of 2212131312123 in words is "two trillion, two hundred twelve billion, one hundred thirty-one million, three hundred twelve thousand, one hundred twenty-three".