20102213 has 2 divisors, whose sum is σ = 20102214. Its totient is φ = 20102212.

The previous prime is 20102153. The next prime is 20102219. The reversal of 20102213 is 31220102.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 20052484 + 49729 = 4478^2 + 223^2 .

It is a cyclic number.

It is not a de Polignac number, because 20102213 - 2¹⁶ = 20036677 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 20102194 and 20102203.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20102219) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10051106 + 10051107.

It is an arithmetic number, because the mean of its divisors is an integer number (10051107).

Almost surely, 2^20102213 is an apocalyptic number.

It is an amenable number.

20102213 is a deficient number, since it is larger than the sum of its proper divisors (1).

20102213 is an equidigital number, since it uses as much as digits as its factorization.

20102213 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 24, while the sum is 11.

The square root of 20102213 is about 4483.5491521784. The cubic root of 20102213 is about 271.9033907552.

Adding to 20102213 its reverse (31220102), we get a palindrome (51322315).

The spelling of 20102213 in words is "twenty million, one hundred two thousand, two hundred thirteen".