12010102120021 has 4 divisors (see below), whose sum is σ = 12010281167232. Its totient is φ = 12009923072812.

The previous prime is 12010102120019. The next prime is 12010102120033. The reversal of 12010102120021 is 12002120101021.

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 12010102120021 - 2¹ = 12010102120019 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12010102119983 and 12010102120010.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12010102120091) 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, 89422951 + ... + 89557156.

It is an arithmetic number, because the mean of its divisors is an integer number (3002570291808).

Almost surely, 2^{12010102120021} is an apocalyptic number.

It is an amenable number.

12010102120021 is a deficient number, since it is larger than the sum of its proper divisors (179047211).

12010102120021 is an equidigital number, since it uses as much as digits as its factorization.

12010102120021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 179047210.

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

Adding to 12010102120021 its reverse (12002120101021), we get a palindrome (24012222221042).

The spelling of 12010102120021 in words is "twelve trillion, ten billion, one hundred two million, one hundred twenty thousand, twenty-one".