22220642206266 has 32 divisors (see below), whose sum is σ = 50806313271168. Its totient is φ = 6346720673280.

The previous prime is 22220642206253. The next prime is 22220642206277. The reversal of 22220642206266 is 66260224602222.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 84627475 + ... + 84889638.

It is an arithmetic number, because the mean of its divisors is an integer number (1587697289724).

Almost surely, 2^{22220642206266} is an apocalyptic number.

22220642206266 is an abundant number, since it is smaller than the sum of its proper divisors (28585671064902).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

22220642206266 is a wasteful number, since it uses less digits than its factorization.

22220642206266 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 169520246.

The product of its (nonzero) digits is 663552, while the sum is 42.

Adding to 22220642206266 its reverse (66260224602222), we get a palindrome (88480866808488).

The spelling of 22220642206266 in words is "twenty-two trillion, two hundred twenty billion, six hundred forty-two million, two hundred six thousand, two hundred sixty-six".