212221213003 has 4 divisors (see below), whose sum is σ = 221448222288. Its totient is φ = 202994203720.

The previous prime is 212221212989. The next prime is 212221213079. The reversal of 212221213003 is 300312122212.

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 212221213003 - 2⁹ = 212221212491 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (212221213903) 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, 4613504608 + ... + 4613504653.

It is an arithmetic number, because the mean of its divisors is an integer number (55362055572).

Almost surely, 2^212221213003 is an apocalyptic number.

212221213003 is a gapful number since it is divisible by the number (23) formed by its first and last digit.

212221213003 is a deficient number, since it is larger than the sum of its proper divisors (9227009285).

212221213003 is an equidigital number, since it uses as much as digits as its factorization.

212221213003 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9227009284.

The product of its (nonzero) digits is 288, while the sum is 19.

Adding to 212221213003 its reverse (300312122212), we get a palindrome (512533335215).

The spelling of 212221213003 in words is "two hundred twelve billion, two hundred twenty-one million, two hundred thirteen thousand, three".