212221021103 has 36 divisors (see below), whose sum is σ = 269819511480. Its totient is φ = 166341180096.

The previous prime is 212221021099. The next prime is 212221021139. The reversal of 212221021103 is 301120122212.

It is not a de Polignac number, because 212221021103 - 2² = 212221021099 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212221021153) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 766313 + ... + 1005821.

It is an arithmetic number, because the mean of its divisors is an integer number (7494986430).

Almost surely, 2^212221021103 is an apocalyptic number.

212221021103 is a deficient number, since it is larger than the sum of its proper divisors (57598490377).

212221021103 is a wasteful number, since it uses less digits than its factorization.

212221021103 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 239656 (or 239636 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 17.

Adding to 212221021103 its reverse (301120122212), we get a palindrome (513341143315).

The spelling of 212221021103 in words is "two hundred twelve billion, two hundred twenty-one million, twenty-one thousand, one hundred three".