20322213 has 16 divisors (see below), whose sum is σ = 27987456. Its totient is φ = 13106880.

The previous prime is 20322199. The next prime is 20322227. The reversal of 20322213 is 31222302.

It is an interprime number because it is at equal distance from previous prime (20322199) and next prime (20322227).

It is not a de Polignac number, because 20322213 - 2¹² = 20318117 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 20322192 and 20322201.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20322233) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 24343 + ... + 25163.

It is an arithmetic number, because the mean of its divisors is an integer number (1749216).

Almost surely, 2^20322213 is an apocalyptic number.

It is an amenable number.

20322213 is a deficient number, since it is larger than the sum of its proper divisors (7665243).

20322213 is a wasteful number, since it uses less digits than its factorization.

20322213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1084.

The product of its (nonzero) digits is 144, while the sum is 15.

The square root of 20322213 is about 4508.0165261454. The cubic root of 20322213 is about 272.8917038826.

Adding to 20322213 its reverse (31222302), we get a palindrome (51544515).

The spelling of 20322213 in words is "twenty million, three hundred twenty-two thousand, two hundred thirteen".