2221312231012 has 24 divisors (see below), whose sum is σ = 4496150062656. Its totient is φ = 940521184608.

The previous prime is 2221312230997. The next prime is 2221312231013. The reversal of 2221312231012 is 2101322131222.

It is not an unprimeable number, because it can be changed into a prime (2221312231013) 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, 477904783 + ... + 477909430.

It is an arithmetic number, because the mean of its divisors is an integer number (187339585944).

Almost surely, 2^{2221312231012} is an apocalyptic number.

It is an amenable number.

2221312231012 is an abundant number, since it is smaller than the sum of its proper divisors (2274837831644).

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

2221312231012 is a wasteful number, since it uses less digits than its factorization.

2221312231012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 955814307 (or 955814305 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 22.

Adding to 2221312231012 its reverse (2101322131222), we get a palindrome (4322634362234).

The spelling of 2221312231012 in words is "two trillion, two hundred twenty-one billion, three hundred twelve million, two hundred thirty-one thousand, twelve".