10221220213 has 2 divisors, whose sum is σ = 10221220214. Its totient is φ = 10221220212.

The previous prime is 10221220181. The next prime is 10221220291. The reversal of 10221220213 is 31202212201.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 7877982564 + 2343237649 = 88758^2 + 48407^2 .

It is a cyclic number.

It is not a de Polignac number, because 10221220213 - 2⁵ = 10221220181 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (10221220813) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5110610106 + 5110610107.

It is an arithmetic number, because the mean of its divisors is an integer number (5110610107).

Almost surely, 2^10221220213 is an apocalyptic number.

It is an amenable number.

10221220213 is a deficient number, since it is larger than the sum of its proper divisors (1).

10221220213 is an equidigital number, since it uses as much as digits as its factorization.

10221220213 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 96, while the sum is 16.

Adding to 10221220213 its reverse (31202212201), we get a palindrome (41423432414).

The spelling of 10221220213 in words is "ten billion, two hundred twenty-one million, two hundred twenty thousand, two hundred thirteen".