121110112020001 has 4 divisors (see below), whose sum is σ = 130426274483092. Its totient is φ = 111793949556912.

The previous prime is 121110112019959. The next prime is 121110112020169. The reversal of 121110112020001 is 100020211011121.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 10974511328400 + 110135600691601 = 3312780^2 + 10494551^2 .

It is a cyclic number.

It is not a de Polignac number, because 121110112020001 - 2¹⁷ = 121110111888929 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (13), and also a Moran number because the ratio is a prime number: 9316162463077 = 121110112020001 / (1 + 2 + 1 + 1 + 1 + 0 + 1 + 1 + 2 + 0 + 2 + 0 + 0 + 0 + 1).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (121110112021001) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4658081231526 + ... + 4658081231551.

It is an arithmetic number, because the mean of its divisors is an integer number (32606568620773).

Almost surely, 2^{121110112020001} is an apocalyptic number.

It is an amenable number.

121110112020001 is a deficient number, since it is larger than the sum of its proper divisors (9316162463091).

121110112020001 is an equidigital number, since it uses as much as digits as its factorization.

121110112020001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9316162463090.

The product of its (nonzero) digits is 8, while the sum is 13.

Adding to 121110112020001 its reverse (100020211011121), we get a palindrome (221130323031122).

The spelling of 121110112020001 in words is "one hundred twenty-one trillion, one hundred ten billion, one hundred twelve million, twenty thousand, one".