22018649100 has 72 divisors (see below), whose sum is σ = 72808339968. Its totient is φ = 5032833600.

The previous prime is 22018649099. The next prime is 22018649113. The reversal of 22018649100 is 194681022.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 5240436 + ... + 5244635.

It is an arithmetic number, because the mean of its divisors is an integer number (1011226944).

Almost surely, 2^22018649100 is an apocalyptic number.

22018649100 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

22018649100 is an abundant number, since it is smaller than the sum of its proper divisors (50789690868).

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

22018649100 is a wasteful number, since it uses less digits than its factorization.

22018649100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10485095 (or 10485088 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 33.

The spelling of 22018649100 in words is "twenty-two billion, eighteen million, six hundred forty-nine thousand, one hundred".