20111331340120 has 32 divisors (see below), whose sum is σ = 47217908365920. Its totient is φ = 7694770251520.

The previous prime is 20111331340099. The next prime is 20111331340153. The reversal of 20111331340120 is 2104313311102.

It is a super-2 number, since 2×20111331340120² (a number of 27 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 20111331340091 and 20111331340100.

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 7 ways as a sum of consecutive naturals, for example, 10930070461 + ... + 10930072300.

It is an arithmetic number, because the mean of its divisors is an integer number (1475559636435).

Almost surely, 2^{20111331340120} is an apocalyptic number.

20111331340120 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20111331340120 is an abundant number, since it is smaller than the sum of its proper divisors (27106577025800).

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

20111331340120 is a wasteful number, since it uses less digits than its factorization.

20111331340120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21860142795 (or 21860142791 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 22.

Adding to 20111331340120 its reverse (2104313311102), we get a palindrome (22215644651222).

The spelling of 20111331340120 in words is "twenty trillion, one hundred eleven billion, three hundred thirty-one million, three hundred forty thousand, one hundred twenty".