12101020112111 has 4 divisors (see below), whose sum is σ = 13829737270992. Its totient is φ = 10372302953232.

The previous prime is 12101020112101. The next prime is 12101020112113. The reversal of 12101020112111 is 11121102010121.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 12101020112111 - 2³⁸ = 11826142205167 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 (12101020112113) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 864358579430 + ... + 864358579443.

It is an arithmetic number, because the mean of its divisors is an integer number (3457434317748).

Almost surely, 2^{12101020112111} is an apocalyptic number.

12101020112111 is a deficient number, since it is larger than the sum of its proper divisors (1728717158881).

12101020112111 is an equidigital number, since it uses as much as digits as its factorization.

12101020112111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1728717158880.

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

Adding to 12101020112111 its reverse (11121102010121), we get a palindrome (23222122122232).

The spelling of 12101020112111 in words is "twelve trillion, one hundred one billion, twenty million, one hundred twelve thousand, one hundred eleven".