212221331103 has 4 divisors (see below), whose sum is σ = 282961774808. Its totient is φ = 141480887400.

The previous prime is 212221331029. The next prime is 212221331111. The reversal of 212221331103 is 301133122212.

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

It is not a de Polignac number, because 212221331103 - 2⁹ = 212221330591 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 212221331103.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212221331123) 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, 35370221848 + ... + 35370221853.

It is an arithmetic number, because the mean of its divisors is an integer number (70740443702).

Almost surely, 2^212221331103 is an apocalyptic number.

212221331103 is a deficient number, since it is larger than the sum of its proper divisors (70740443705).

212221331103 is an equidigital number, since it uses as much as digits as its factorization.

212221331103 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 70740443704.

The product of its (nonzero) digits is 432, while the sum is 21.

Adding to 212221331103 its reverse (301133122212), we get a palindrome (513354453315).

The spelling of 212221331103 in words is "two hundred twelve billion, two hundred twenty-one million, three hundred thirty-one thousand, one hundred three".