221312130100012 has 12 divisors (see below), whose sum is σ = 442624260200080. Its totient is φ = 94848055757136.

The previous prime is 221312130099997. The next prime is 221312130100067. The reversal of 221312130100012 is 210001031213122.

221312130100012 is an admirable number.

It is a super-2 number, since 2×221312130100012² (a number of 29 digits) contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3952002323187 + ... + 3952002323242.

Almost surely, 2^{221312130100012} is an apocalyptic number.

It is an amenable number.

221312130100012 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.

221312130100012 is a wasteful number, since it uses less digits than its factorization.

221312130100012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7904004646440 (or 7904004646438 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 19.

Adding to 221312130100012 its reverse (210001031213122), we get a palindrome (431313161313134).

The spelling of 221312130100012 in words is "two hundred twenty-one trillion, three hundred twelve billion, one hundred thirty million, one hundred thousand, twelve".