2021021102005 has 8 divisors (see below), whose sum is σ = 2455924377600. Its totient is φ = 1596350844816.

The previous prime is 2021021101999. The next prime is 2021021102033. The reversal of 2021021102005 is 5002011201202.

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 2021021102005 - 2⁷ = 2021021101877 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 2021021102005.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2558254165 + ... + 2558254954.

It is an arithmetic number, because the mean of its divisors is an integer number (306990547200).

Almost surely, 2^{2021021102005} is an apocalyptic number.

It is an amenable number.

2021021102005 is a deficient number, since it is larger than the sum of its proper divisors (434903275595).

2021021102005 is an equidigital number, since it uses as much as digits as its factorization.

2021021102005 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5116509203.

The product of its (nonzero) digits is 80, while the sum is 16.

Adding to 2021021102005 its reverse (5002011201202), we get a palindrome (7023032303207).

The spelling of 2021021102005 in words is "two trillion, twenty-one billion, twenty-one million, one hundred two thousand, five".