21101231303003 has 16 divisors (see below), whose sum is σ = 22487563892736. Its totient is φ = 19753988173920.

The previous prime is 21101231302967. The next prime is 21101231303027. The reversal of 21101231303003 is 30030313210112.

It is not a de Polignac number, because 21101231303003 - 2²⁶ = 21101164194139 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21101231306003) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 74481125 + ... + 74763897.

It is an arithmetic number, because the mean of its divisors is an integer number (1405472743296).

Almost surely, 2^{21101231303003} is an apocalyptic number.

21101231303003 is a gapful number since it is divisible by the number (23) formed by its first and last digit.

21101231303003 is a deficient number, since it is larger than the sum of its proper divisors (1386332589733).

21101231303003 is a wasteful number, since it uses less digits than its factorization.

21101231303003 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 351874.

The product of its (nonzero) digits is 324, while the sum is 20.

Adding to 21101231303003 its reverse (30030313210112), we get a palindrome (51131544513115).

The spelling of 21101231303003 in words is "twenty-one trillion, one hundred one billion, two hundred thirty-one million, three hundred three thousand, three".