20242213 has 2 divisors, whose sum is σ = 20242214. Its totient is φ = 20242212.

The previous prime is 20242199. The next prime is 20242247. The reversal of 20242213 is 31224202.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 19873764 + 368449 = 4458^2 + 607^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20242213 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20242253) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10121106 + 10121107.

It is an arithmetic number, because the mean of its divisors is an integer number (10121107).

Almost surely, 2^20242213 is an apocalyptic number.

It is an amenable number.

20242213 is a deficient number, since it is larger than the sum of its proper divisors (1).

20242213 is an equidigital number, since it uses as much as digits as its factorization.

20242213 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 192, while the sum is 16.

The square root of 20242213 is about 4499.1346945829. The cubic root of 20242213 is about 272.5331463762.

Adding to 20242213 its reverse (31224202), we get a palindrome (51466415).

The spelling of 20242213 in words is "twenty million, two hundred forty-two thousand, two hundred thirteen".