12121022102111 has 16 divisors (see below), whose sum is σ = 13175943070080. Its totient is φ = 11084091217920.

The previous prime is 12121022102093. The next prime is 12121022102153. The reversal of 12121022102111 is 11120122012121.

It is a cyclic number.

It is not a de Polignac number, because 12121022102111 - 2²² = 12121017907807 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 12121022102111.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12121022102171) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9507080 + ... + 10706381.

It is an arithmetic number, because the mean of its divisors is an integer number (823496441880).

Almost surely, 2^{12121022102111} is an apocalyptic number.

12121022102111 is a deficient number, since it is larger than the sum of its proper divisors (1054920967969).

12121022102111 is a wasteful number, since it uses less digits than its factorization.

12121022102111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20213906.

The product of its (nonzero) digits is 32, while the sum is 17.

Adding to 12121022102111 its reverse (11120122012121), we get a palindrome (23241144114232).

The spelling of 12121022102111 in words is "twelve trillion, one hundred twenty-one billion, twenty-two million, one hundred two thousand, one hundred eleven".