21102220002203 has 8 divisors (see below), whose sum is σ = 21448523563776. Its totient is φ = 20755928232000.

The previous prime is 21102220002191. The next prime is 21102220002233. The reversal of 21102220002203 is 30220002220112.

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 21102220002203 - 2¹² = 21102219998107 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21102220002233) 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, 697478 + ... + 6533828.

It is an arithmetic number, because the mean of its divisors is an integer number (2681065445472).

Almost surely, 2^{21102220002203} is an apocalyptic number.

21102220002203 is a deficient number, since it is larger than the sum of its proper divisors (346303561573).

21102220002203 is an equidigital number, since it uses as much as digits as its factorization.

21102220002203 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5895685.

The product of its (nonzero) digits is 192, while the sum is 17.

Adding to 21102220002203 its reverse (30220002220112), we get a palindrome (51322222222315).

The spelling of 21102220002203 in words is "twenty-one trillion, one hundred two billion, two hundred twenty million, two thousand, two hundred three".