21000220201002 has 64 divisors (see below), whose sum is σ = 50346704056320. Its totient is φ = 5713688414016.

The previous prime is 21000220200983. The next prime is 21000220201013. The reversal of 21000220201002 is 20010202200012.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 143689252 + ... + 143835327.

It is an arithmetic number, because the mean of its divisors is an integer number (786667250880).

Almost surely, 2^{21000220201002} is an apocalyptic number.

21000220201002 is an abundant number, since it is smaller than the sum of its proper divisors (29346483855318).

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

21000220201002 is a wasteful number, since it uses less digits than its factorization.

21000220201002 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 287524675.

The product of its (nonzero) digits is 32, while the sum is 12.

Adding to 21000220201002 its reverse (20010202200012), we get a palindrome (41010422401014).

The spelling of 21000220201002 in words is "twenty-one trillion, two hundred twenty million, two hundred one thousand, two".