21011131102203 has 12 divisors (see below), whose sum is σ = 33108449009688. Its totient is φ = 12734018849760.

The previous prime is 21011131102193. The next prime is 21011131102333. The reversal of 21011131102203 is 30220113111012.

21011131102203 is a `hidden beast` number, since 21 + 0 + 111 + 311 + 0 + 220 + 3 = 666.

It is not a de Polignac number, because 21011131102203 - 2¹⁰ = 21011131101179 is a prime.

It is not an unprimeable number, because it can be changed into a prime (21011171102203) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 106116823650 + ... + 106116823847.

It is an arithmetic number, because the mean of its divisors is an integer number (2759037417474).

Almost surely, 2^{21011131102203} is an apocalyptic number.

21011131102203 is a deficient number, since it is larger than the sum of its proper divisors (12097317907485).

21011131102203 is a wasteful number, since it uses less digits than its factorization.

21011131102203 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 212233647514 (or 212233647511 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 18.

Adding to 21011131102203 its reverse (30220113111012), we get a palindrome (51231244213215).

The spelling of 21011131102203 in words is "twenty-one trillion, eleven billion, one hundred thirty-one million, one hundred two thousand, two hundred three".