22218649522 has 8 divisors (see below), whose sum is σ = 33328775196. Its totient is φ = 11109057792.

The previous prime is 22218649513. The next prime is 22218649547. The reversal of 22218649522 is 22594681222.

It can be written as a sum of positive squares in 2 ways, for example, as 19782141201 + 2436508321 = 140649^2 + 49361^2 .

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

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4543 + ... + 210850.

Almost surely, 2^22218649522 is an apocalyptic number.

22218649522 is a deficient number, since it is larger than the sum of its proper divisors (11110125674).

22218649522 is a wasteful number, since it uses less digits than its factorization.

22218649522 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 266972.

The product of its digits is 276480, while the sum is 43.

The spelling of 22218649522 in words is "twenty-two billion, two hundred eighteen million, six hundred forty-nine thousand, five hundred twenty-two".