2221230312012 has 96 divisors (see below), whose sum is σ = 5523455798784. Its totient is φ = 693734630400.

The previous prime is 2221230311983. The next prime is 2221230312031. The reversal of 2221230312012 is 2102130321222.

It is a self number, because there is not a number n which added to its sum of digits gives 2221230312012.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 536212 + ... + 2174852.

It is an arithmetic number, because the mean of its divisors is an integer number (57535997904).

Almost surely, 2^{2221230312012} is an apocalyptic number.

It is an amenable number.

2221230312012 is an abundant number, since it is smaller than the sum of its proper divisors (3302225486772).

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

2221230312012 is a wasteful number, since it uses less digits than its factorization.

2221230312012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1638799 (or 1638797 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 21.

Adding to 2221230312012 its reverse (2102130321222), we get a palindrome (4323360633234).

The spelling of 2221230312012 in words is "two trillion, two hundred twenty-one billion, two hundred thirty million, three hundred twelve thousand, twelve".