22218722055 has 24 divisors (see below), whose sum is σ = 38665907280. Its totient is φ = 11802768000.

The previous prime is 22218722017. The next prime is 22218722069. The reversal of 22218722055 is 55022781222.

It is not a de Polignac number, because 22218722055 - 2¹² = 22218717959 is a prime.

It is a congruent number.

It is an unprimeable number.

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 23 ways as a sum of consecutive naturals, for example, 972270 + ... + 994859.

It is an arithmetic number, because the mean of its divisors is an integer number (1611079470).

Almost surely, 2^22218722055 is an apocalyptic number.

22218722055 is a deficient number, since it is larger than the sum of its proper divisors (16447185225).

22218722055 is a wasteful number, since it uses less digits than its factorization.

22218722055 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1967391 (or 1967388 counting only the distinct ones).

The product of its (nonzero) digits is 44800, while the sum is 36.

The spelling of 22218722055 in words is "twenty-two billion, two hundred eighteen million, seven hundred twenty-two thousand, fifty-five".