21031002212303 has 8 divisors (see below), whose sum is σ = 21131412707328. Its totient is φ = 20930646191544.

The previous prime is 21031002212299. The next prime is 21031002212321. The reversal of 21031002212303 is 30321220013012.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 21031002212303 - 2² = 21031002212299 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 (21031002212333) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12844475 + ... + 14388972.

It is an arithmetic number, because the mean of its divisors is an integer number (2641426588416).

Almost surely, 2^{21031002212303} is an apocalyptic number.

21031002212303 is a deficient number, since it is larger than the sum of its proper divisors (100410495025).

21031002212303 is a wasteful number, since it uses less digits than its factorization.

21031002212303 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27237133.

The product of its (nonzero) digits is 432, while the sum is 20.

Adding to 21031002212303 its reverse (30321220013012), we get a palindrome (51352222225315).

The spelling of 21031002212303 in words is "twenty-one trillion, thirty-one billion, two million, two hundred twelve thousand, three hundred three".