21103221222303 has 8 divisors (see below), whose sum is σ = 30695594505216. Its totient is φ = 12789831043800.

The previous prime is 21103221222271. The next prime is 21103221222311. The reversal of 21103221222303 is 30322212230112.

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

It is not a de Polignac number, because 21103221222303 - 2⁵ = 21103221222271 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21103221222313) 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, 319745776063 + ... + 319745776128.

It is an arithmetic number, because the mean of its divisors is an integer number (3836949313152).

Almost surely, 2^{21103221222303} is an apocalyptic number.

21103221222303 is a deficient number, since it is larger than the sum of its proper divisors (9592373282913).

21103221222303 is a wasteful number, since it uses less digits than its factorization.

21103221222303 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 639491552205.

The product of its (nonzero) digits is 1728, while the sum is 24.

Adding to 21103221222303 its reverse (30322212230112), we get a palindrome (51425433452415).

The spelling of 21103221222303 in words is "twenty-one trillion, one hundred three billion, two hundred twenty-one million, two hundred twenty-two thousand, three hundred three".