12121102012111 has 8 divisors (see below), whose sum is σ = 12329178498000. Its totient is φ = 11914752302400.

The previous prime is 12121102012027. The next prime is 12121102012157. The reversal of 12121102012111 is 11121020112121.

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

It is a cyclic number.

It is not a de Polignac number, because 12121102012111 - 2¹¹ = 12121102010063 is a prime.

It is a super-2 number, since 2×12121102012111² (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 (12121102010111) 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, 431679886 + ... + 431707963.

It is an arithmetic number, because the mean of its divisors is an integer number (1541147312250).

Almost surely, 2^{12121102012111} is an apocalyptic number.

12121102012111 is a deficient number, since it is larger than the sum of its proper divisors (208076485889).

12121102012111 is a wasteful number, since it uses less digits than its factorization.

12121102012111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 863388089.

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

Adding to 12121102012111 its reverse (11121020112121), we get a palindrome (23242122124232).

The spelling of 12121102012111 in words is "twelve trillion, one hundred twenty-one billion, one hundred two million, twelve thousand, one hundred eleven".