12101020010111 has 4 divisors (see below), whose sum is σ = 12101040036312. Its totient is φ = 12100999983912.

The previous prime is 12101020010083. The next prime is 12101020010141. The reversal of 12101020010111 is 11101002010121.

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 12101020010111 - 2¹⁸ = 12101019747967 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12101020010092 and 12101020010101.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12101020010141) 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, 9077576 + ... + 10324941.

It is an arithmetic number, because the mean of its divisors is an integer number (3025260009078).

Almost surely, 2^{12101020010111} is an apocalyptic number.

12101020010111 is a deficient number, since it is larger than the sum of its proper divisors (20026201).

12101020010111 is an equidigital number, since it uses as much as digits as its factorization.

12101020010111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20026200.

The product of its (nonzero) digits is 4, while the sum is 11.

Adding to 12101020010111 its reverse (11101002010121), we get a palindrome (23202022020232).

The spelling of 12101020010111 in words is "twelve trillion, one hundred one billion, twenty million, ten thousand, one hundred eleven".