12101120211011 has 4 divisors (see below), whose sum is σ = 13031975611872. Its totient is φ = 11170264810152.

The previous prime is 12101120211007. The next prime is 12101120211013. The reversal of 12101120211011 is 11011202110121.

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 12101120211011 - 2² = 12101120211007 is a prime.

It is a super-2 number, since 2×12101120211011² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12101120211013) 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, 465427700411 + ... + 465427700436.

It is an arithmetic number, because the mean of its divisors is an integer number (3257993902968).

Almost surely, 2^{12101120211011} is an apocalyptic number.

12101120211011 is a deficient number, since it is larger than the sum of its proper divisors (930855400861).

12101120211011 is an equidigital number, since it uses as much as digits as its factorization.

12101120211011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 930855400860.

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

Adding to 12101120211011 its reverse (11011202110121), we get a palindrome (23112322321132).

It can be divided in two parts, 1 and 2101120211011, that added together give a palindrome (2101120211012).

The spelling of 12101120211011 in words is "twelve trillion, one hundred one billion, one hundred twenty million, two hundred eleven thousand, eleven".