121111020001 has 8 divisors (see below), whose sum is σ = 125570090880. Its totient is φ = 116670804432.

The previous prime is 121111019969. The next prime is 121111020013. The reversal of 121111020001 is 100020111121.

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 121111020001 - 2⁵ = 121111019969 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 121111020001.

It is not an unprimeable number, because it can be changed into a prime (121111020071) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4700745 + ... + 4726438.

It is an arithmetic number, because the mean of its divisors is an integer number (15696261360).

Almost surely, 2^121111020001 is an apocalyptic number.

It is an amenable number.

121111020001 is a deficient number, since it is larger than the sum of its proper divisors (4459070879).

121111020001 is an equidigital number, since it uses as much as digits as its factorization.

121111020001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9427655.

The product of its (nonzero) digits is 4, while the sum is 10.

Adding to 121111020001 its reverse (100020111121), we get a palindrome (221131131122).

The spelling of 121111020001 in words is "one hundred twenty-one billion, one hundred eleven million, twenty thousand, one".