21002022001201 has 8 divisors (see below), whose sum is σ = 21490739234624. Its totient is φ = 20513318318640.

The previous prime is 21002022001123. The next prime is 21002022001267. The reversal of 21002022001201 is 10210022020012.

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 not a de Polignac number, because 21002022001201 - 2³³ = 20993432066609 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21002022001291) 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, 217806 + ... + 6484711.

It is an arithmetic number, because the mean of its divisors is an integer number (2686342404328).

Almost surely, 2^{21002022001201} is an apocalyptic number.

It is an amenable number.

21002022001201 is a deficient number, since it is larger than the sum of its proper divisors (488717233423).

21002022001201 is an equidigital number, since it uses as much as digits as its factorization.

21002022001201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6775431.

The product of its (nonzero) digits is 32, while the sum is 13.

Adding to 21002022001201 its reverse (10210022020012), we get a palindrome (31212044021213).

The spelling of 21002022001201 in words is "twenty-one trillion, two billion, twenty-two million, one thousand, two hundred one".