213122102211321 has 4 divisors (see below), whose sum is σ = 284162802948432. Its totient is φ = 142081401474212.

The previous prime is 213122102211313. The next prime is 213122102211331. The reversal of 213122102211321 is 123112201221312.

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 213122102211321 - 2³ = 213122102211313 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 213122102211291 and 213122102211300.

It is not an unprimeable number, because it can be changed into a prime (213122102211311) 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, 35520350368551 + ... + 35520350368556.

It is an arithmetic number, because the mean of its divisors is an integer number (71040700737108).

Almost surely, 2^{213122102211321} is an apocalyptic number.

It is an amenable number.

213122102211321 is a deficient number, since it is larger than the sum of its proper divisors (71040700737111).

213122102211321 is an equidigital number, since it uses as much as digits as its factorization.

213122102211321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 71040700737110.

The product of its (nonzero) digits is 576, while the sum is 24.

Adding to 213122102211321 its reverse (123112201221312), we get a palindrome (336234303432633).

Subtracting from 213122102211321 its reverse (123112201221312), we obtain a palindrome (90009900990009).

The spelling of 213122102211321 in words is "two hundred thirteen trillion, one hundred twenty-two billion, one hundred two million, two hundred eleven thousand, three hundred twenty-one".