121002000001 has 4 divisors (see below), whose sum is σ = 121002966612. Its totient is φ = 121001033392.

The previous prime is 121001999981. The next prime is 121002000037. The reversal of 121002000001 is 100000200121.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 94187610000 + 26814390001 = 306900^2 + 163751^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-121002000001 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (121002000601) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 261646 + ... + 557191.

It is an arithmetic number, because the mean of its divisors is an integer number (30250741653).

Almost surely, 2^121002000001 is an apocalyptic number.

It is an amenable number.

121002000001 is a deficient number, since it is larger than the sum of its proper divisors (966611).

121002000001 is an equidigital number, since it uses as much as digits as its factorization.

121002000001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 966610.

The product of its (nonzero) digits is 4, while the sum is 7.

Adding to 121002000001 its reverse (100000200121), we get a palindrome (221002200122).

The spelling of 121002000001 in words is "one hundred twenty-one billion, two million, one", and thus it is an aban number.