20111302211311 has 8 divisors (see below), whose sum is σ = 21201247671920. Its totient is φ = 19024502337792.

The previous prime is 20111302211309. The next prime is 20111302211323. The reversal of 20111302211311 is 11311220311102.

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

It is a cyclic number.

It is not a de Polignac number, because 20111302211311 - 2¹ = 20111302211309 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (19).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20111302211911) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 786383640 + ... + 786409213.

It is an arithmetic number, because the mean of its divisors is an integer number (2650155958990).

Almost surely, 2^{20111302211311} is an apocalyptic number.

20111302211311 is a deficient number, since it is larger than the sum of its proper divisors (1089945460609).

20111302211311 is a wasteful number, since it uses less digits than its factorization.

20111302211311 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1572793545.

The product of its (nonzero) digits is 72, while the sum is 19.

Adding to 20111302211311 its reverse (11311220311102), we get a palindrome (31422522522413).

The spelling of 20111302211311 in words is "twenty trillion, one hundred eleven billion, three hundred two million, two hundred eleven thousand, three hundred eleven".