21222001202211 has 12 divisors (see below), whose sum is σ = 30658395406392. Its totient is φ = 14145972953856.

The previous prime is 21222001202209. The next prime is 21222001202251. The reversal of 21222001202211 is 11220210022212.

It is a happy number.

21222001202211 is a `hidden beast` number, since 2 + 122 + 200 + 120 + 221 + 1 = 666.

It is not a de Polignac number, because 21222001202211 - 2¹ = 21222001202209 is a prime.

It is a super-2 number, since 2×21222001202211² (a number of 27 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (21222001202201) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 168921021 + ... + 169046606.

It is an arithmetic number, because the mean of its divisors is an integer number (2554866283866).

Almost surely, 2^{21222001202211} is an apocalyptic number.

21222001202211 is a deficient number, since it is larger than the sum of its proper divisors (9436394204181).

21222001202211 is a wasteful number, since it uses less digits than its factorization.

21222001202211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 337974610 (or 337974607 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 18.

Adding to 21222001202211 its reverse (11220210022212), we get a palindrome (32442211224423).

The spelling of 21222001202211 in words is "twenty-one trillion, two hundred twenty-two billion, one million, two hundred two thousand, two hundred eleven".