121011020020001 has 16 divisors (see below), whose sum is σ = 123954837811200. Its totient is φ = 118073102550480.

The previous prime is 121011020019941. The next prime is 121011020020003. The reversal of 121011020020001 is 100020020110121.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-121011020020001 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (121011020020003) 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, 2156147126 + ... + 2156203248.

It is an arithmetic number, because the mean of its divisors is an integer number (7747177363200).

Almost surely, 2^{121011020020001} is an apocalyptic number.

It is an amenable number.

121011020020001 is a deficient number, since it is larger than the sum of its proper divisors (2943817791199).

121011020020001 is an equidigital number, since it uses as much as digits as its factorization.

121011020020001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 107756.

The product of its (nonzero) digits is 8, while the sum is 11.

Adding to 121011020020001 its reverse (100020020110121), we get a palindrome (221031040130122).

The spelling of 121011020020001 in words is "one hundred twenty-one trillion, eleven billion, twenty million, twenty thousand, one".