22017211665211 has 12 divisors (see below), whose sum is σ = 25581790402896. Its totient is φ = 18562520351520.

The previous prime is 22017211665209. The next prime is 22017211665217. The reversal of 22017211665211 is 11256611271022.

It is a happy number.

It is not a de Polignac number, because 22017211665211 - 2¹ = 22017211665209 is a prime.

It is not an unprimeable number, because it can be changed into a prime (22017211665217) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 422617860 + ... + 422669953.

It is an arithmetic number, because the mean of its divisors is an integer number (2131815866908).

Almost surely, 2^{22017211665211} is an apocalyptic number.

22017211665211 is a deficient number, since it is larger than the sum of its proper divisors (3564578737685).

22017211665211 is an frugal number, since it uses more digits than its factorization.

22017211665211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 845287942 (or 845287881 counting only the distinct ones).

The product of its (nonzero) digits is 20160, while the sum is 37.

The spelling of 22017211665211 in words is "twenty-two trillion, seventeen billion, two hundred eleven million, six hundred sixty-five thousand, two hundred eleven".