10213312221 has 16 divisors (see below), whose sum is σ = 17292380800. Its totient is φ = 5836178304.

The previous prime is 10213312201. The next prime is 10213312243. The reversal of 10213312221 is 12221331201.

It is not a de Polignac number, because 10213312221 - 2⁹ = 10213311709 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 10213312194 and 10213312203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10213312201) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 27019156 + ... + 27019533.

It is an arithmetic number, because the mean of its divisors is an integer number (1080773800).

Almost surely, 2^10213312221 is an apocalyptic number.

It is an amenable number.

10213312221 is a deficient number, since it is larger than the sum of its proper divisors (7079068579).

10213312221 is an equidigital number, since it uses as much as digits as its factorization.

10213312221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 54038705 (or 54038699 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 18.

Adding to 10213312221 its reverse (12221331201), we get a palindrome (22434643422).

The spelling of 10213312221 in words is "ten billion, two hundred thirteen million, three hundred twelve thousand, two hundred twenty-one".