121212120002001 has 8 divisors (see below), whose sum is σ = 184704182860224. Its totient is φ = 69264068572560.

The previous prime is 121212120001993. The next prime is 121212120002009. The reversal of 121212120002001 is 100200021212121.

It is an interprime number because it is at equal distance from previous prime (121212120001993) and next prime (121212120002009).

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 121212120002001 - 2³ = 121212120001993 is a prime.

It is not an unprimeable number, because it can be changed into a prime (121212120002009) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2886002857170 + ... + 2886002857211.

It is an arithmetic number, because the mean of its divisors is an integer number (23088022857528).

Almost surely, 2^{121212120002001} is an apocalyptic number.

It is an amenable number.

121212120002001 is a deficient number, since it is larger than the sum of its proper divisors (63492062858223).

121212120002001 is an equidigital number, since it uses as much as digits as its factorization.

121212120002001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5772005714391.

The product of its (nonzero) digits is 32, while the sum is 15.

Adding to 121212120002001 its reverse (100200021212121), we get a palindrome (221412141214122).

The spelling of 121212120002001 in words is "one hundred twenty-one trillion, two hundred twelve billion, one hundred twenty million, two thousand, one".