21011110010103 has 16 divisors (see below), whose sum is σ = 28196682103296. Its totient is φ = 13916494007520.

The previous prime is 21011110010003. The next prime is 21011110010227. The reversal of 21011110010103 is 30101001111012.

It is not a de Polignac number, because 21011110010103 - 2¹⁴ = 21011109993719 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21011110010003) 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, 1166950 + ... + 6586652.

It is an arithmetic number, because the mean of its divisors is an integer number (1762292631456).

Almost surely, 2^{21011110010103} is an apocalyptic number.

21011110010103 is a deficient number, since it is larger than the sum of its proper divisors (7185572093193).

21011110010103 is a wasteful number, since it uses less digits than its factorization.

21011110010103 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5428094.

The product of its (nonzero) digits is 6, while the sum is 12.

Adding to 21011110010103 its reverse (30101001111012), we get a palindrome (51112111121115).

The spelling of 21011110010103 in words is "twenty-one trillion, eleven billion, one hundred ten million, ten thousand, one hundred three".