121001102020001 has 4 divisors (see below), whose sum is σ = 138286973737152. Its totient is φ = 103715230302852.

The previous prime is 121001102019979. The next prime is 121001102020063. The reversal of 121001102020001 is 100020201100121.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 121001102020001 - 2⁶ = 121001102019937 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (121021102020001) 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, 8642935858565 + ... + 8642935858578.

It is an arithmetic number, because the mean of its divisors is an integer number (34571743434288).

Almost surely, 2^{121001102020001} is an apocalyptic number.

It is an amenable number.

121001102020001 is a deficient number, since it is larger than the sum of its proper divisors (17285871717151).

121001102020001 is an equidigital number, since it uses as much as digits as its factorization.

121001102020001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17285871717150.

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

Adding to 121001102020001 its reverse (100020201100121), we get a palindrome (221021303120122).

The spelling of 121001102020001 in words is "one hundred twenty-one trillion, one billion, one hundred two million, twenty thousand, one".