22018202012 has 12 divisors (see below), whose sum is σ = 38754582216. Its totient is φ = 10945464240.

The previous prime is 22018201999. The next prime is 22018202021. The reversal of 22018202012 is 21020281022.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 15908414 + ... + 15909797.

It is an arithmetic number, because the mean of its divisors is an integer number (3229548518).

Almost surely, 2^22018202012 is an apocalyptic number.

It is an amenable number.

22018202012 is a deficient number, since it is larger than the sum of its proper divisors (16736380204).

22018202012 is a wasteful number, since it uses less digits than its factorization.

22018202012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31818388 (or 31818386 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 20.

Adding to 22018202012 its reverse (21020281022), we get a palindrome (43038483034).

The spelling of 22018202012 in words is "twenty-two billion, eighteen million, two hundred two thousand, twelve".