212220103 has 4 divisors (see below), whose sum is σ = 221447088. Its totient is φ = 202993120.

The previous prime is 212220097. The next prime is 212220119. The reversal of 212220103 is 301022212.

212220103 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 212220103 - 2¹³ = 212211911 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 (212220133) 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, 4613458 + ... + 4613503.

It is an arithmetic number, because the mean of its divisors is an integer number (55361772).

Almost surely, 2^212220103 is an apocalyptic number.

212220103 is a gapful number since it is divisible by the number (23) formed by its first and last digit.

212220103 is a deficient number, since it is larger than the sum of its proper divisors (9226985).

212220103 is an equidigital number, since it uses as much as digits as its factorization.

212220103 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9226984.

The product of its (nonzero) digits is 48, while the sum is 13.

The square root of 212220103 is about 14567.7761858150. The cubic root of 212220103 is about 596.4794789915.

Adding to 212220103 its reverse (301022212), we get a palindrome (513242315).

The spelling of 212220103 in words is "two hundred twelve million, two hundred twenty thousand, one hundred three".