12021022201021 has 8 divisors (see below), whose sum is σ = 12024377795520. Its totient is φ = 12017667069408.

The previous prime is 12021022201009. The next prime is 12021022201091. The reversal of 12021022201021 is 12010222012021.

It is a happy number.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12021022201021 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12021022200986 and 12021022201004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12021022201091) 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, 55498710 + ... + 55714888.

It is an arithmetic number, because the mean of its divisors is an integer number (1503047224440).

Almost surely, 2^{12021022201021} is an apocalyptic number.

It is an amenable number.

12021022201021 is a deficient number, since it is larger than the sum of its proper divisors (3355594499).

12021022201021 is an equidigital number, since it uses as much as digits as its factorization.

12021022201021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 231443.

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 12021022201021 its reverse (12010222012021), we get a palindrome (24031244213042).

The spelling of 12021022201021 in words is "twelve trillion, twenty-one billion, twenty-two million, two hundred one thousand, twenty-one".