2212102012123 has 4 divisors (see below), whose sum is σ = 2213478555120. Its totient is φ = 2210725469128.

The previous prime is 2212102012117. The next prime is 2212102012171. The reversal of 2212102012123 is 3212102012122.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 2212102012123 - 2²⁹ = 2211565141211 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 2212102012123.

It is not an unprimeable number, because it can be changed into a prime (2212102010123) 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, 688269088 + ... + 688272301.

It is an arithmetic number, because the mean of its divisors is an integer number (553369638780).

Almost surely, 2^{2212102012123} is an apocalyptic number.

2212102012123 is a deficient number, since it is larger than the sum of its proper divisors (1376542997).

2212102012123 is a wasteful number, since it uses less digits than its factorization.

2212102012123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1376542996.

The product of its (nonzero) digits is 192, while the sum is 19.

Adding to 2212102012123 its reverse (3212102012122), we get a palindrome (5424204024245).

Subtracting 2212102012123 from its reverse (3212102012122), we obtain a palindrome (999999999999).

The spelling of 2212102012123 in words is "two trillion, two hundred twelve billion, one hundred two million, twelve thousand, one hundred twenty-three".