12001002002121 has 8 divisors (see below), whose sum is σ = 17456002912224. Its totient is φ = 7273334546720.

The previous prime is 12001002002117. The next prime is 12001002002153. The reversal of 12001002002121 is 12120020010021.

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

It is not a de Polignac number, because 12001002002121 - 2² = 12001002002117 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 12001002002097 and 12001002002106.

It is not an unprimeable number, because it can be changed into a prime (12001002002161) 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 7 ways as a sum of consecutive naturals, for example, 181833363636 + ... + 181833363701.

It is an arithmetic number, because the mean of its divisors is an integer number (2182000364028).

Almost surely, 2^{12001002002121} is an apocalyptic number.

12001002002121 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

12001002002121 is a deficient number, since it is larger than the sum of its proper divisors (5455000910103).

12001002002121 is a wasteful number, since it uses less digits than its factorization.

12001002002121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 363666727351.

The product of its (nonzero) digits is 16, while the sum is 12.

Adding to 12001002002121 its reverse (12120020010021), we get a palindrome (24121022012142).

The spelling of 12001002002121 in words is "twelve trillion, one billion, two million, two thousand, one hundred twenty-one".