20011103211013 has 16 divisors (see below), whose sum is σ = 20214945980416. Its totient is φ = 19808012594160.

The previous prime is 20011103210929. The next prime is 20011103211061. The reversal of 20011103211013 is 31011230111002.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 20011103211013 - 2¹⁷ = 20011103079941 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 (20011103211713) 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, 178151398 + ... + 178263688.

It is an arithmetic number, because the mean of its divisors is an integer number (1263434123776).

Almost surely, 2^{20011103211013} is an apocalyptic number.

It is an amenable number.

20011103211013 is a deficient number, since it is larger than the sum of its proper divisors (203842769403).

20011103211013 is a wasteful number, since it uses less digits than its factorization.

20011103211013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 115624.

The product of its (nonzero) digits is 36, while the sum is 16.

Adding to 20011103211013 its reverse (31011230111002), we get a palindrome (51022333322015).

The spelling of 20011103211013 in words is "twenty trillion, eleven billion, one hundred three million, two hundred eleven thousand, thirteen".