221112000012 has 24 divisors (see below), whose sum is σ = 546276706416. Its totient is φ = 69368470528.

The previous prime is 221111999993. The next prime is 221112000013. The reversal of 221112000012 is 210000211122.

It is a Harshad number since it is a multiple of its sum of digits (12).

It is not an unprimeable number, because it can be changed into a prime (221112000013) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 541940973 + ... + 541941380.

It is an arithmetic number, because the mean of its divisors is an integer number (22761529434).

Almost surely, 2^221112000012 is an apocalyptic number.

It is an amenable number.

221112000012 is an abundant number, since it is smaller than the sum of its proper divisors (325164706404).

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

221112000012 is a wasteful number, since it uses less digits than its factorization.

221112000012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1083882377 (or 1083882375 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 12.

Adding to 221112000012 its reverse (210000211122), we get a palindrome (431112211134).

The spelling of 221112000012 in words is "two hundred twenty-one billion, one hundred twelve million, twelve", and thus it is an aban number.