20111122011320 has 64 divisors (see below), whose sum is σ = 45513832573440. Its totient is φ = 7997599411200.

The previous prime is 20111122011293. The next prime is 20111122011349. The reversal of 20111122011320 is 2311022111102.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 12157100 + ... + 13711940.

It is an arithmetic number, because the mean of its divisors is an integer number (711153633960).

Almost surely, 2^{20111122011320} is an apocalyptic number.

20111122011320 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20111122011320 is an abundant number, since it is smaller than the sum of its proper divisors (25402710562120).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20111122011320 is a wasteful number, since it uses less digits than its factorization.

20111122011320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1556736 (or 1556732 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 17.

Adding to 20111122011320 its reverse (2311022111102), we get a palindrome (22422144122422).

The spelling of 20111122011320 in words is "twenty trillion, one hundred eleven billion, one hundred twenty-two million, eleven thousand, three hundred twenty".