12102111020111 has 8 divisors (see below), whose sum is σ = 13831280126880. Its totient is φ = 10373015939328.

The previous prime is 12102111020107. The next prime is 12102111020141. The reversal of 12102111020111 is 11102011120121.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 12102111020111 - 2² = 12102111020107 is a prime.

It is a super-2 number, since 2×12102111020111² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12102111020141) 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, 18155726 + ... + 18810491.

It is an arithmetic number, because the mean of its divisors is an integer number (1728910015860).

Almost surely, 2^{12102111020111} is an apocalyptic number.

12102111020111 is a deficient number, since it is larger than the sum of its proper divisors (1729169106769).

12102111020111 is an equidigital number, since it uses as much as digits as its factorization.

12102111020111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37012993.

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

Adding to 12102111020111 its reverse (11102011120121), we get a palindrome (23204122140232).

It can be divided in two parts, 1210211 and 1020111, that added together give a palindrome (2230322).

The spelling of 12102111020111 in words is "twelve trillion, one hundred two billion, one hundred eleven million, twenty thousand, one hundred eleven".