212021103 has 8 divisors (see below), whose sum is σ = 323079808. Its totient is φ = 121154904.

The previous prime is 212021099. The next prime is 212021113. The reversal of 212021103 is 301120212.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 212021103 - 2² = 212021099 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 (212021113) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5048101 + ... + 5048142.

It is an arithmetic number, because the mean of its divisors is an integer number (40384976).

Almost surely, 2^212021103 is an apocalyptic number.

212021103 is a deficient number, since it is larger than the sum of its proper divisors (111058705).

212021103 is a wasteful number, since it uses less digits than its factorization.

212021103 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10096253.

The product of its (nonzero) digits is 24, while the sum is 12.

The square root of 212021103 is about 14560.9444405231. The cubic root of 212021103 is about 596.2929799501.

Adding to 212021103 its reverse (301120212), we get a palindrome (513141315).

The spelling of 212021103 in words is "two hundred twelve million, twenty-one thousand, one hundred three".