21111300000003 has 16 divisors (see below), whose sum is σ = 28534246587936. Its totient is φ = 13881280112640.

The previous prime is 21111299999987. The next prime is 21111300000029. The reversal of 21111300000003 is 30000000311112.

It is not a de Polignac number, because 21111300000003 - 2⁴ = 21111299999987 is a prime.

It is not an unprimeable number, because it can be changed into a prime (21111300000083) 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, 29078743 + ... + 29795903.

It is an arithmetic number, because the mean of its divisors is an integer number (1783390411746).

Almost surely, 2^{21111300000003} is an apocalyptic number.

21111300000003 is a deficient number, since it is larger than the sum of its proper divisors (7422946587933).

21111300000003 is a wasteful number, since it uses less digits than its factorization.

21111300000003 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 851654.

The product of its (nonzero) digits is 18, while the sum is 12.

Adding to 21111300000003 its reverse (30000000311112), we get a palindrome (51111300311115).

The spelling of 21111300000003 in words is "twenty-one trillion, one hundred eleven billion, three hundred million, three", and thus it is an aban number.