121102122011111 has 16 divisors (see below), whose sum is σ = 126493479161280. Its totient is φ = 115721326279680.

The previous prime is 121102122011093. The next prime is 121102122011113. The reversal of 121102122011111 is 111110221201121.

It is not a de Polignac number, because 121102122011111 - 2²² = 121102117816807 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 121102122011111.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121102122011113) 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, 92369081 + ... + 93670973.

It is an arithmetic number, because the mean of its divisors is an integer number (7905842447580).

Almost surely, 2^{121102122011111} is an apocalyptic number.

121102122011111 is a deficient number, since it is larger than the sum of its proper divisors (5391357150169).

121102122011111 is a wasteful number, since it uses less digits than its factorization.

121102122011111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1305946.

The product of its (nonzero) digits is 16, while the sum is 17.

Adding to 121102122011111 its reverse (111110221201121), we get a palindrome (232212343212232).

The spelling of 121102122011111 in words is "one hundred twenty-one trillion, one hundred two billion, one hundred twenty-two million, eleven thousand, one hundred eleven".