121111012222001 has 8 divisors (see below), whose sum is σ = 125018049383424. Its totient is φ = 117203989455360.

The previous prime is 121111012221923. The next prime is 121111012222007. The reversal of 121111012222001 is 100222210111121.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 121111012222001 - 2¹⁰ = 121111012220977 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (121111012222007) 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 7 ways as a sum of consecutive naturals, for example, 15030641 + ... + 21636593.

It is an arithmetic number, because the mean of its divisors is an integer number (15627256172928).

Almost surely, 2^{121111012222001} is an apocalyptic number.

It is an amenable number.

121111012222001 is a deficient number, since it is larger than the sum of its proper divisors (3907037161423).

121111012222001 is an equidigital number, since it uses as much as digits as its factorization.

121111012222001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7197391.

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

Adding to 121111012222001 its reverse (100222210111121), we get a palindrome (221333222333122).

The spelling of 121111012222001 in words is "one hundred twenty-one trillion, one hundred eleven billion, twelve million, two hundred twenty-two thousand, one".