212204431124023 has 4 divisors (see below), whose sum is σ = 228527848902808. Its totient is φ = 195881013345240.

The previous prime is 212204431123921. The next prime is 212204431124029. The reversal of 212204431124023 is 320421134402212.

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-212204431124023 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212204431124029) 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, 8161708889373 + ... + 8161708889398.

It is an arithmetic number, because the mean of its divisors is an integer number (57131962225702).

Almost surely, 2^{212204431124023} is an apocalyptic number.

212204431124023 is a deficient number, since it is larger than the sum of its proper divisors (16323417778785).

212204431124023 is a wasteful number, since it uses less digits than its factorization.

212204431124023 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16323417778784.

The product of its (nonzero) digits is 18432, while the sum is 31.

Adding to 212204431124023 its reverse (320421134402212), we get a palindrome (532625565526235).

The spelling of 212204431124023 in words is "two hundred twelve trillion, two hundred four billion, four hundred thirty-one million, one hundred twenty-four thousand, twenty-three".