20110203321311 has 16 divisors (see below), whose sum is σ = 20190817382400. Its totient is φ = 20029782180000.

The previous prime is 20110203321283. The next prime is 20110203321361. The reversal of 20110203321311 is 11312330201102.

It is a happy number.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20110203321311 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 (20110203321361) 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, 651453785 + ... + 651484653.

It is an arithmetic number, because the mean of its divisors is an integer number (1261926086400).

Almost surely, 2^{20110203321311} is an apocalyptic number.

20110203321311 is a deficient number, since it is larger than the sum of its proper divisors (80614061089).

20110203321311 is a wasteful number, since it uses less digits than its factorization.

20110203321311 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33910.

The product of its (nonzero) digits is 216, while the sum is 20.

Adding to 20110203321311 its reverse (11312330201102), we get a palindrome (31422533522413).

The spelling of 20110203321311 in words is "twenty trillion, one hundred ten billion, two hundred three million, three hundred twenty-one thousand, three hundred eleven".