21202000221002 has 16 divisors (see below), whose sum is σ = 32138858261832. Its totient is φ = 10489101834240.

The previous prime is 21202000220993. The next prime is 21202000221029. The reversal of 21202000221002 is 20012200020212.

It can be written as a sum of positive squares in 4 ways, for example, as 12249643002601 + 8952357218401 = 3499949^2 + 2992049^2 .

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, 12809663 + ... + 14369810.

Almost surely, 2^{21202000221002} is an apocalyptic number.

21202000221002 is a deficient number, since it is larger than the sum of its proper divisors (10936858040830).

21202000221002 is a wasteful number, since it uses less digits than its factorization.

21202000221002 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27183593.

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

Adding to 21202000221002 its reverse (20012200020212), we get a palindrome (41214200241214).

The spelling of 21202000221002 in words is "twenty-one trillion, two hundred two billion, two hundred twenty-one thousand, two".