212143312221203 has 4 divisors (see below), whose sum is σ = 231429067877688. Its totient is φ = 192857556564720.

The previous prime is 212143312221187. The next prime is 212143312221223. The reversal of 212143312221203 is 302122213341212.

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 212143312221203 - 2⁴ = 212143312221187 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (212143312221223) 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, 9642877828226 + ... + 9642877828247.

It is an arithmetic number, because the mean of its divisors is an integer number (57857266969422).

Almost surely, 2^{212143312221203} is an apocalyptic number.

212143312221203 is a deficient number, since it is larger than the sum of its proper divisors (19285755656485).

212143312221203 is a wasteful number, since it uses less digits than its factorization.

212143312221203 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19285755656484.

The product of its (nonzero) digits is 6912, while the sum is 29.

Adding to 212143312221203 its reverse (302122213341212), we get a palindrome (514265525562415).

The spelling of 212143312221203 in words is "two hundred twelve trillion, one hundred forty-three billion, three hundred twelve million, two hundred twenty-one thousand, two hundred three".