12010210120021 has 4 divisors (see below), whose sum is σ = 12189466987552. Its totient is φ = 11830953252492.

The previous prime is 12010210119991. The next prime is 12010210120081. The reversal of 12010210120021 is 12002101201021.

12010210120021 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 a cyclic number.

It is not a de Polignac number, because 12010210120021 - 2¹⁹ = 12010209595733 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12010210119983 and 12010210120010.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12010210120081) 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, 89628433665 + ... + 89628433798.

It is an arithmetic number, because the mean of its divisors is an integer number (3047366746888).

Almost surely, 2^{12010210120021} is an apocalyptic number.

It is an amenable number.

12010210120021 is a deficient number, since it is larger than the sum of its proper divisors (179256867531).

12010210120021 is an equidigital number, since it uses as much as digits as its factorization.

12010210120021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 179256867530.

The product of its (nonzero) digits is 16, while the sum is 13.

Adding to 12010210120021 its reverse (12002101201021), we get a palindrome (24012311321042).

The spelling of 12010210120021 in words is "twelve trillion, ten billion, two hundred ten million, one hundred twenty thousand, twenty-one".