22200222012 has 24 divisors (see below), whose sum is σ = 54052715136. Its totient is φ = 7078331568.

The previous prime is 22200222007. The next prime is 22200222047. The reversal of 22200222012 is 21022200222.

It is a junction number, because it is equal to n+sod(n) for n = 22200221982 and 22200222000.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 40217518 + ... + 40218069.

It is an arithmetic number, because the mean of its divisors is an integer number (2252196464).

Almost surely, 2^22200222012 is an apocalyptic number.

It is an amenable number.

22200222012 is an abundant number, since it is smaller than the sum of its proper divisors (31852493124).

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

22200222012 is a wasteful number, since it uses less digits than its factorization.

22200222012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 80435617 (or 80435615 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 15.

Adding to 22200222012 its reverse (21022200222), we get a palindrome (43222422234).

The spelling of 22200222012 in words is "twenty-two billion, two hundred million, two hundred twenty-two thousand, twelve".