21200022021202 has 8 divisors (see below), whose sum is σ = 31800059708796. Its totient is φ = 10600002118272.

The previous prime is 21200022021137. The next prime is 21200022021203. The reversal of 21200022021202 is 20212022000212.

It can be written as a sum of positive squares in 2 ways, for example, as 21139590123961 + 60431897241 = 4597781^2 + 245829^2 .

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

It is not an unprimeable number, because it can be changed into a prime (21200022021203) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 900583 + ... + 6573514.

Almost surely, 2^{21200022021202} is an apocalyptic number.

21200022021202 is a deficient number, since it is larger than the sum of its proper divisors (10600037687594).

21200022021202 is a wasteful number, since it uses less digits than its factorization.

21200022021202 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8892332.

The product of its (nonzero) digits is 128, while the sum is 16.

Adding to 21200022021202 its reverse (20212022000212), we get a palindrome (41412044021414).

The spelling of 21200022021202 in words is "twenty-one trillion, two hundred billion, twenty-two million, twenty-one thousand, two hundred two".