21111301120103 has 8 divisors (see below), whose sum is σ = 22476640389840. Its totient is φ = 19759683853440.

The previous prime is 21111301120073. The next prime is 21111301120111. The reversal of 21111301120103 is 30102110311112.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 21111301120103 - 2⁸ = 21111301119847 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 a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21111301120183) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3430497593 + ... + 3430503746.

It is an arithmetic number, because the mean of its divisors is an integer number (2809580048730).

Almost surely, 2^{21111301120103} is an apocalyptic number.

21111301120103 is a deficient number, since it is larger than the sum of its proper divisors (1365339269737).

21111301120103 is a wasteful number, since it uses less digits than its factorization.

21111301120103 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6861001537.

The product of its (nonzero) digits is 36, while the sum is 17.

Adding to 21111301120103 its reverse (30102110311112), we get a palindrome (51213411431215).

The spelling of 21111301120103 in words is "twenty-one trillion, one hundred eleven billion, three hundred one million, one hundred twenty thousand, one hundred three".