21202213031303 has 4 divisors (see below), whose sum is σ = 21202238108640. Its totient is φ = 21202187953968.

The previous prime is 21202213031291. The next prime is 21202213031327. The reversal of 21202213031303 is 30313031220212.

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 21202213031303 - 2⁴ = 21202213031287 is a prime.

It is a super-3 number, since 3×21202213031303³ (a number of 41 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21202213031903) 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, 11224550 + ... + 12976707.

It is an arithmetic number, because the mean of its divisors is an integer number (5300559527160).

Almost surely, 2^{21202213031303} is an apocalyptic number.

21202213031303 is a deficient number, since it is larger than the sum of its proper divisors (25077337).

21202213031303 is an equidigital number, since it uses as much as digits as its factorization.

21202213031303 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25077336.

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

Adding to 21202213031303 its reverse (30313031220212), we get a palindrome (51515244251515).

The spelling of 21202213031303 in words is "twenty-one trillion, two hundred two billion, two hundred thirteen million, thirty-one thousand, three hundred three".