20212303 has 16 divisors (see below), whose sum is σ = 22425984. Its totient is φ = 18135040.

The previous prime is 20212271. The next prime is 20212319. The reversal of 20212303 is 30321202.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 20212303 - 2⁵ = 20212271 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20212373) 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, 32451 + ... + 33067.

It is an arithmetic number, because the mean of its divisors is an integer number (1401624).

Almost surely, 2^20212303 is an apocalyptic number.

20212303 is a deficient number, since it is larger than the sum of its proper divisors (2213681).

20212303 is a wasteful number, since it uses less digits than its factorization.

20212303 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 722.

The product of its (nonzero) digits is 72, while the sum is 13.

The square root of 20212303 is about 4495.8094932948. The cubic root of 20212303 is about 272.3988480728.

Adding to 20212303 its reverse (30321202), we get a palindrome (50533505).

The spelling of 20212303 in words is "twenty million, two hundred twelve thousand, three hundred three".