12102120102111 has 96 divisors (see below), whose sum is σ = 17686703462400. Its totient is φ = 7357069399680.

The previous prime is 12102120102109. The next prime is 12102120102151. The reversal of 12102120102111 is 11120102120121.

It is a happy number.

It is not a de Polignac number, because 12102120102111 - 2¹ = 12102120102109 is a prime.

It is a super-2 number, since 2×12102120102111² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12102120102151) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 11384872566 + ... + 11384873628.

It is an arithmetic number, because the mean of its divisors is an integer number (184236494400).

Almost surely, 2^{12102120102111} is an apocalyptic number.

12102120102111 is a deficient number, since it is larger than the sum of its proper divisors (5584583360289).

12102120102111 is a wasteful number, since it uses less digits than its factorization.

12102120102111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1981 (or 1968 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 15.

Adding to 12102120102111 its reverse (11120102120121), we get a palindrome (23222222222232).

The spelling of 12102120102111 in words is "twelve trillion, one hundred two billion, one hundred twenty million, one hundred two thousand, one hundred eleven".