12010011121021 has 8 divisors (see below), whose sum is σ = 12716648836920. Its totient is φ = 11303391902208.

The previous prime is 12010011121019. The next prime is 12010011121037. The reversal of 12010011121021 is 12012111001021.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 3283960108900 + 8726051012121 = 1812170^2 + 2953989^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 12010011121021 - 2¹ = 12010011121019 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12010011120992 and 12010011121010.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12010011121001) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3276256 + ... + 5895241.

It is an arithmetic number, because the mean of its divisors is an integer number (1589581104615).

Almost surely, 2^{12010011121021} is an apocalyptic number.

It is an amenable number.

12010011121021 is a deficient number, since it is larger than the sum of its proper divisors (706637715899).

12010011121021 is an equidigital number, since it uses as much as digits as its factorization.

12010011121021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9248543.

The product of its (nonzero) digits is 8, while the sum is 13.

Adding to 12010011121021 its reverse (12012111001021), we get a palindrome (24022122122042).

The spelling of 12010011121021 in words is "twelve trillion, ten billion, eleven million, one hundred twenty-one thousand, twenty-one".