212013223321 has 4 divisors (see below), whose sum is σ = 212496169600. Its totient is φ = 211530277044.

The previous prime is 212013223249. The next prime is 212013223337. The reversal of 212013223321 is 123322310212.

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 212013223321 - 2³¹ = 209865739673 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 212013223292 and 212013223301.

It is not an unprimeable number, because it can be changed into a prime (212013223391) 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, 241472481 + ... + 241473358.

It is an arithmetic number, because the mean of its divisors is an integer number (53124042400).

Almost surely, 2^212013223321 is an apocalyptic number.

It is an amenable number.

212013223321 is a deficient number, since it is larger than the sum of its proper divisors (482946279).

212013223321 is an equidigital number, since it uses as much as digits as its factorization.

212013223321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 482946278.

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

Adding to 212013223321 its reverse (123322310212), we get a palindrome (335335533533).

The spelling of 212013223321 in words is "two hundred twelve billion, thirteen million, two hundred twenty-three thousand, three hundred twenty-one".