212332220123 has 4 divisors (see below), whose sum is σ = 212527559040. Its totient is φ = 212136881208.

The previous prime is 212332220083. The next prime is 212332220143. The reversal of 212332220123 is 321022233212.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-212332220123 is a prime.

It is a super-2 number, since 2×212332220123² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (212332220143) 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, 97667828 + ... + 97670001.

It is an arithmetic number, because the mean of its divisors is an integer number (53131889760).

Almost surely, 2^212332220123 is an apocalyptic number.

212332220123 is a deficient number, since it is larger than the sum of its proper divisors (195338917).

212332220123 is a wasteful number, since it uses less digits than its factorization.

212332220123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 195338916.

The product of its (nonzero) digits is 1728, while the sum is 23.

Adding to 212332220123 its reverse (321022233212), we get a palindrome (533354453335).

The spelling of 212332220123 in words is "two hundred twelve billion, three hundred thirty-two million, two hundred twenty thousand, one hundred twenty-three".