121112012220011 has 16 divisors (see below), whose sum is σ = 124072029728640. Its totient is φ = 118185952716480.

The previous prime is 121112012220007. The next prime is 121112012220013. The reversal of 121112012220011 is 110022210211121.

It is a cyclic number.

It is not a de Polignac number, because 121112012220011 - 2² = 121112012220007 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (121112012220013) 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, 267744071 + ... + 268196031.

It is an arithmetic number, because the mean of its divisors is an integer number (7754501858040).

Almost surely, 2^{121112012220011} is an apocalyptic number.

121112012220011 is a deficient number, since it is larger than the sum of its proper divisors (2960017508629).

121112012220011 is a wasteful number, since it uses less digits than its factorization.

121112012220011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 489514.

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

Adding to 121112012220011 its reverse (110022210211121), we get a palindrome (231134222431132).

The spelling of 121112012220011 in words is "one hundred twenty-one trillion, one hundred twelve billion, twelve million, two hundred twenty thousand, eleven".