12010121201021 has 4 divisors (see below), whose sum is σ = 12642232843200. Its totient is φ = 11378009558844.

The previous prime is 12010121201011. The next prime is 12010121201027. The reversal of 12010121201021 is 12010212101021.

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 12010121201021 - 2²² = 12010117006717 is a prime.

It is a super-2 number, since 2×12010121201021² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12010121200987 and 12010121201005.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12010121201027) 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, 316055821061 + ... + 316055821098.

It is an arithmetic number, because the mean of its divisors is an integer number (3160558210800).

Almost surely, 2^{12010121201021} is an apocalyptic number.

It is an amenable number.

12010121201021 is a deficient number, since it is larger than the sum of its proper divisors (632111642179).

12010121201021 is an equidigital number, since it uses as much as digits as its factorization.

12010121201021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 632111642178.

The product of its (nonzero) digits is 16, while the sum is 14.

Adding to 12010121201021 its reverse (12010212101021), we get a palindrome (24020333302042).

The spelling of 12010121201021 in words is "twelve trillion, ten billion, one hundred twenty-one million, two hundred one thousand, twenty-one".