21200221101 has 8 divisors (see below), whose sum is σ = 28267976160. Its totient is φ = 14132973392.

The previous prime is 21200221099. The next prime is 21200221117. The reversal of 21200221101 is 10112200212.

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

It is a cyclic number.

It is not a de Polignac number, because 21200221101 - 2¹ = 21200221099 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21200221121) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 15330 + ... + 206483.

It is an arithmetic number, because the mean of its divisors is an integer number (3533497020).

Almost surely, 2^21200221101 is an apocalyptic number.

It is an amenable number.

21200221101 is a deficient number, since it is larger than the sum of its proper divisors (7067755059).

21200221101 is a wasteful number, since it uses less digits than its factorization.

21200221101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 253675.

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

Adding to 21200221101 its reverse (10112200212), we get a palindrome (31312421313).

The spelling of 21200221101 in words is "twenty-one billion, two hundred million, two hundred twenty-one thousand, one hundred one".