21202221120211 has 8 divisors (see below), whose sum is σ = 21889371659264. Its totient is φ = 20515271076360.

The previous prime is 21202221120163. The next prime is 21202221120251. The reversal of 21202221120211 is 11202112220212.

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 21202221120211 - 2³¹ = 21200073636563 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21202221120251) 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, 49908861 + ... + 50331886.

It is an arithmetic number, because the mean of its divisors is an integer number (2736171457408).

Almost surely, 2^{21202221120211} is an apocalyptic number.

21202221120211 is a deficient number, since it is larger than the sum of its proper divisors (687150539053).

21202221120211 is a wasteful number, since it uses less digits than its factorization.

21202221120211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 100247601.

The product of its (nonzero) digits is 128, while the sum is 19.

Adding to 21202221120211 its reverse (11202112220212), we get a palindrome (32404333340423).

The spelling of 21202221120211 in words is "twenty-one trillion, two hundred two billion, two hundred twenty-one million, one hundred twenty thousand, two hundred eleven".