21201010012002 has 16 divisors (see below), whose sum is σ = 42798300586272. Its totient is φ = 7000956576960.

The previous prime is 21201010011997. The next prime is 21201010012019. The reversal of 21201010012002 is 20021001010212.

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, 16511689399 + ... + 16511690682.

It is an arithmetic number, because the mean of its divisors is an integer number (2674893786642).

Almost surely, 2^{21201010012002} is an apocalyptic number.

21201010012002 is an abundant number, since it is smaller than the sum of its proper divisors (21597290574270).

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

21201010012002 is a wasteful number, since it uses less digits than its factorization.

21201010012002 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33023380193.

The product of its (nonzero) digits is 16, while the sum is 12.

Adding to 21201010012002 its reverse (20021001010212), we get a palindrome (41222011022214).

The spelling of 21201010012002 in words is "twenty-one trillion, two hundred one billion, ten million, twelve thousand, two".