21213322010303 has 4 divisors (see below), whose sum is σ = 21213552249288. Its totient is φ = 21213091771320.

The previous prime is 21213322010273. The next prime is 21213322010311. The reversal of 21213322010303 is 30301022331212.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 21213322010303 - 2¹⁶ = 21213321944767 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 (21213322010203) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 114981233 + ... + 115165578.

It is an arithmetic number, because the mean of its divisors is an integer number (5303388062322).

Almost surely, 2^{21213322010303} is an apocalyptic number.

21213322010303 is a deficient number, since it is larger than the sum of its proper divisors (230238985).

21213322010303 is an equidigital number, since it uses as much as digits as its factorization.

21213322010303 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 230238984.

The product of its (nonzero) digits is 1296, while the sum is 23.

Adding to 21213322010303 its reverse (30301022331212), we get a palindrome (51514344341515).

The spelling of 21213322010303 in words is "twenty-one trillion, two hundred thirteen billion, three hundred twenty-two million, ten thousand, three hundred three".