21011102231003 has 8 divisors (see below), whose sum is σ = 22666805071488. Its totient is φ = 19402038907264.

The previous prime is 21011102230997. The next prime is 21011102231089. The reversal of 21011102231003 is 30013220111012.

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 21011102231003 - 2⁶ = 21011102230939 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (17).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21011102231803) 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, 11659878251 + ... + 11659880052.

It is an arithmetic number, because the mean of its divisors is an integer number (2833350633936).

Almost surely, 2^{21011102231003} is an apocalyptic number.

21011102231003 is a deficient number, since it is larger than the sum of its proper divisors (1655702840485).

21011102231003 is a wasteful number, since it uses less digits than its factorization.

21011102231003 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23319758373.

The product of its (nonzero) digits is 72, while the sum is 17.

Adding to 21011102231003 its reverse (30013220111012), we get a palindrome (51024322342015).

The spelling of 21011102231003 in words is "twenty-one trillion, eleven billion, one hundred two million, two hundred thirty-one thousand, three".