21201222101330 has 8 divisors (see below), whose sum is σ = 38162199782412. Its totient is φ = 8480488840528.

The previous prime is 21201222101317. The next prime is 21201222101359. The reversal of 21201222101330 is 3310122210212.

It can be written as a sum of positive squares in 2 ways, for example, as 17024181325369 + 4177040775961 = 4126037^2 + 2043781^2 .

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

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, 1060061105057 + ... + 1060061105076.

Almost surely, 2^{21201222101330} is an apocalyptic number.

21201222101330 is a deficient number, since it is larger than the sum of its proper divisors (16960977681082).

21201222101330 is a wasteful number, since it uses less digits than its factorization.

21201222101330 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2120122210140.

The product of its (nonzero) digits is 288, while the sum is 20.

Adding to 21201222101330 its reverse (3310122210212), we get a palindrome (24511344311542).

The spelling of 21201222101330 in words is "twenty-one trillion, two hundred one billion, two hundred twenty-two million, one hundred one thousand, three hundred thirty".