20121144111132 has 12 divisors (see below), whose sum is σ = 46949336259336. Its totient is φ = 6707048037040.

The previous prime is 20121144111121. The next prime is 20121144111169. The reversal of 20121144111132 is 23111144112102.

It is a tau number, because it is divible by the number of its divisors (12).

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 3 ways as a sum of consecutive naturals, for example, 838381004619 + ... + 838381004642.

It is an arithmetic number, because the mean of its divisors is an integer number (3912444688278).

Almost surely, 2^{20121144111132} is an apocalyptic number.

It is an amenable number.

20121144111132 is an abundant number, since it is smaller than the sum of its proper divisors (26828192148204).

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

20121144111132 is a wasteful number, since it uses less digits than its factorization.

20121144111132 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1676762009268 (or 1676762009266 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 24.

Adding to 20121144111132 its reverse (23111144112102), we get a palindrome (43232288223234).

The spelling of 20121144111132 in words is "twenty trillion, one hundred twenty-one billion, one hundred forty-four million, one hundred eleven thousand, one hundred thirty-two".