22012100012 has 12 divisors (see below), whose sum is σ = 44024200080. Its totient is φ = 9433757136.

The previous prime is 22012099997. The next prime is 22012100023. The reversal of 22012100012 is 21000121022.

It is a happy number.

22012100012 is an admirable number.

It is a junction number, because it is equal to n+sod(n) for n = 22012099966 and 22012100002.

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, 393073187 + ... + 393073242.

It is an arithmetic number, because the mean of its divisors is an integer number (3668683340).

Almost surely, 2^22012100012 is an apocalyptic number.

It is an amenable number.

22012100012 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

22012100012 is a wasteful number, since it uses less digits than its factorization.

22012100012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 786146440 (or 786146438 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 11.

Adding to 22012100012 its reverse (21000121022), we get a palindrome (43012221034).

The spelling of 22012100012 in words is "twenty-two billion, twelve million, one hundred thousand, twelve".