20111122010140 has 24 divisors (see below), whose sum is σ = 48266692824672. Its totient is φ = 6895241832000.

The previous prime is 20111122010137. The next prime is 20111122010141. The reversal of 20111122010140 is 4101022111102.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20111122010141) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 71825435611 + ... + 71825435890.

It is an arithmetic number, because the mean of its divisors is an integer number (2011112201028).

Almost surely, 2^{20111122010140} is an apocalyptic number.

20111122010140 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20111122010140 is an abundant number, since it is smaller than the sum of its proper divisors (28155570814532).

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

20111122010140 is a wasteful number, since it uses less digits than its factorization.

20111122010140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 143650871517 (or 143650871515 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 16.

Adding to 20111122010140 its reverse (4101022111102), we get a palindrome (24212144121242).

The spelling of 20111122010140 in words is "twenty trillion, one hundred eleven billion, one hundred twenty-two million, ten thousand, one hundred forty".