20120100102111 has 16 divisors (see below), whose sum is σ = 26975851798016. Its totient is φ = 13338926055936.

The previous prime is 20120100102061. The next prime is 20120100102133. The reversal of 20120100102111 is 11120100102102.

It is not a de Polignac number, because 20120100102111 - 2⁹ = 20120100101599 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 (20120100102161) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4922455 + ... + 8029368.

It is an arithmetic number, because the mean of its divisors is an integer number (1685990737376).

Almost surely, 2^{20120100102111} is an apocalyptic number.

20120100102111 is a deficient number, since it is larger than the sum of its proper divisors (6855751695905).

20120100102111 is a wasteful number, since it uses less digits than its factorization.

20120100102111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12954702.

The product of its (nonzero) digits is 8, while the sum is 12.

Adding to 20120100102111 its reverse (11120100102102), we get a palindrome (31240200204213).

Subtracting from 20120100102111 its reverse (11120100102102), we obtain a palindrome (9000000000009).

The spelling of 20120100102111 in words is "twenty trillion, one hundred twenty billion, one hundred million, one hundred two thousand, one hundred eleven".