12002100120021 has 32 divisors (see below), whose sum is σ = 18489603328128. Its totient is φ = 6844234199040.

The previous prime is 12002100119939. The next prime is 12002100120067.

12002100120021 is nontrivially palindromic in base 10.

It is not a de Polignac number, because 12002100120021 - 2⁹ = 12002100119509 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 12002100119979 and 12002100120006.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12002100127021) 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 31 ways as a sum of consecutive naturals, for example, 900820 + ... + 4981533.

It is an arithmetic number, because the mean of its divisors is an integer number (577800104004).

Almost surely, 2^{12002100120021} is an apocalyptic number.

12002100120021 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

12002100120021 is a deficient number, since it is larger than the sum of its proper divisors (6487503208107).

12002100120021 is a wasteful number, since it uses less digits than its factorization.

12002100120021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5886021.

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

It can be divided in two parts, 12002100 and 120021, that multiplied together give a square (1440504044100 = 1200210²).

The spelling of 12002100120021 in words is "twelve trillion, two billion, one hundred million, one hundred twenty thousand, twenty-one".