21010103323111 has 12 divisors (see below), whose sum is σ = 24440402110800. Its totient is φ = 18008602637760.

The previous prime is 21010103323037. The next prime is 21010103323127. The reversal of 21010103323111 is 11132330101012.

It is not a de Polignac number, because 21010103323111 - 2¹³ = 21010103314919 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21010103323151) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 23540590 + ... + 24416788.

It is an arithmetic number, because the mean of its divisors is an integer number (2036700175900).

Almost surely, 2^{21010103323111} is an apocalyptic number.

21010103323111 is a deficient number, since it is larger than the sum of its proper divisors (3430298787689).

21010103323111 is an equidigital number, since it uses as much as digits as its factorization.

21010103323111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1365574 (or 1365567 counting only the distinct ones).

The product of its (nonzero) digits is 108, while the sum is 19.

Adding to 21010103323111 its reverse (11132330101012), we get a palindrome (32142433424123).

The spelling of 21010103323111 in words is "twenty-one trillion, ten billion, one hundred three million, three hundred twenty-three thousand, one hundred eleven".