20022213 has 32 divisors (see below), whose sum is σ = 29140992. Its totient is φ = 12196800.

The previous prime is 20022203. The next prime is 20022229. The reversal of 20022213 is 31222002.

It is not a de Polignac number, because 20022213 - 2¹³ = 20014021 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20022203) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 281968 + ... + 282038.

It is an arithmetic number, because the mean of its divisors is an integer number (910656).

Almost surely, 2^20022213 is an apocalyptic number.

20022213 is a gapful number since it is divisible by the number (23) formed by its first and last digit.

It is an amenable number.

20022213 is a deficient number, since it is larger than the sum of its proper divisors (9118779).

20022213 is a wasteful number, since it uses less digits than its factorization.

20022213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 225.

The product of its (nonzero) digits is 48, while the sum is 12.

The square root of 20022213 is about 4474.6187547097. The cubic root of 20022213 is about 271.5422167427.

Adding to 20022213 its reverse (31222002), we get a palindrome (51244215).

The spelling of 20022213 in words is "twenty million, twenty-two thousand, two hundred thirteen".