121111022002111 has 16 divisors (see below), whose sum is σ = 121606427407104. Its totient is φ = 120616512217344.

The previous prime is 121111022002079. The next prime is 121111022002153. The reversal of 121111022002111 is 111200220111121.

It is a cyclic number.

It is not a de Polignac number, because 121111022002111 - 2⁵ = 121111022002079 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121111022002211) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (31) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3101971156 + ... + 3102010198.

It is an arithmetic number, because the mean of its divisors is an integer number (7600401712944).

Almost surely, 2^{121111022002111} is an apocalyptic number.

121111022002111 is a deficient number, since it is larger than the sum of its proper divisors (495405404993).

121111022002111 is an equidigital number, since it uses as much as digits as its factorization.

121111022002111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 50190.

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

Adding to 121111022002111 its reverse (111200220111121), we get a palindrome (232311242113232).

The spelling of 121111022002111 in words is "one hundred twenty-one trillion, one hundred eleven billion, twenty-two million, two thousand, one hundred eleven".