21022002022001 has 8 divisors (see below), whose sum is σ = 21030045266880. Its totient is φ = 21013960300432.

The previous prime is 21022002021919. The next prime is 21022002022027. The reversal of 21022002022001 is 10022020022012.

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-21022002022001 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21022002022031) 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, 27617156 + ... + 28368138.

It is an arithmetic number, because the mean of its divisors is an integer number (2628755658360).

Almost surely, 2^{21022002022001} is an apocalyptic number.

It is an amenable number.

21022002022001 is a deficient number, since it is larger than the sum of its proper divisors (8043244879).

21022002022001 is an equidigital number, since it uses as much as digits as its factorization.

21022002022001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 761655.

The product of its (nonzero) digits is 64, while the sum is 14.

Adding to 21022002022001 its reverse (10022020022012), we get a palindrome (31044022044013).

The spelling of 21022002022001 in words is "twenty-one trillion, twenty-two billion, two million, twenty-two thousand, one".