121012220111011 has 16 divisors (see below), whose sum is σ = 139225084968960. Its totient is φ = 104418813709440.

The previous prime is 121012220110987. The next prime is 121012220111033. The reversal of 121012220111011 is 110111022210121.

It is a cyclic number.

It is not a de Polignac number, because 121012220111011 - 2¹³ = 121012220102819 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (121012220111071) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6042745411 + ... + 6042765436.

It is an arithmetic number, because the mean of its divisors is an integer number (8701567810560).

Almost surely, 2^{121012220111011} is an apocalyptic number.

121012220111011 is a deficient number, since it is larger than the sum of its proper divisors (18212864857949).

121012220111011 is a wasteful number, since it uses less digits than its factorization.

121012220111011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12085510914.

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

Adding to 121012220111011 its reverse (110111022210121), we get a palindrome (231123242321132).

The spelling of 121012220111011 in words is "one hundred twenty-one trillion, twelve billion, two hundred twenty million, one hundred eleven thousand, eleven".