20121101120111 has 8 divisors (see below), whose sum is σ = 20232388822464. Its totient is φ = 20009814752160.

The previous prime is 20121101120069. The next prime is 20121101120171. The reversal of 20121101120111 is 11102110112102.

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 20121101120111 - 2⁶ = 20121101120047 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20121101120171) 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, 58762346 + ... + 59103768.

It is an arithmetic number, because the mean of its divisors is an integer number (2529048602808).

Almost surely, 2^{20121101120111} is an apocalyptic number.

20121101120111 is a deficient number, since it is larger than the sum of its proper divisors (111287702353).

20121101120111 is a wasteful number, since it uses less digits than its factorization.

20121101120111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 667201.

The product of its (nonzero) digits is 8, while the sum is 14.

Adding to 20121101120111 its reverse (11102110112102), we get a palindrome (31223211232213).

The spelling of 20121101120111 in words is "twenty trillion, one hundred twenty-one billion, one hundred one million, one hundred twenty thousand, one hundred eleven".