212221233013 has 4 divisors (see below), whose sum is σ = 221448243168. Its totient is φ = 202994222860.

The previous prime is 212221232999. The next prime is 212221233019. The reversal of 212221233013 is 310332122212.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 212221233013 - 2¹³ = 212221224821 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 (212221233019) 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, 4613505043 + ... + 4613505088.

It is an arithmetic number, because the mean of its divisors is an integer number (55362060792).

Almost surely, 2^212221233013 is an apocalyptic number.

212221233013 is a gapful number since it is divisible by the number (23) formed by its first and last digit.

It is an amenable number.

212221233013 is a deficient number, since it is larger than the sum of its proper divisors (9227010155).

212221233013 is an equidigital number, since it uses as much as digits as its factorization.

212221233013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9227010154.

The product of its (nonzero) digits is 864, while the sum is 22.

Adding to 212221233013 its reverse (310332122212), we get a palindrome (522553355225).

The spelling of 212221233013 in words is "two hundred twelve billion, two hundred twenty-one million, two hundred thirty-three thousand, thirteen".