21021201202002 has 8 divisors (see below), whose sum is σ = 42042402404016. Its totient is φ = 7007067067332.

The previous prime is 21021201201983. The next prime is 21021201202033. The reversal of 21021201202002 is 20020210212012.

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

21021201202002 is an admirable number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1751766766828 + ... + 1751766766839.

It is an arithmetic number, because the mean of its divisors is an integer number (5255300300502).

Almost surely, 2^{21021201202002} is an apocalyptic number.

21021201202002 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

21021201202002 is a wasteful number, since it uses less digits than its factorization.

21021201202002 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3503533533672.

The product of its (nonzero) digits is 64, while the sum is 15.

Adding to 21021201202002 its reverse (20020210212012), we get a palindrome (41041411414014).

The spelling of 21021201202002 in words is "twenty-one trillion, twenty-one billion, two hundred one million, two hundred two thousand, two".