2221312130312 has 64 divisors (see below), whose sum is σ = 4576961894400. Its totient is φ = 1002274194240.

The previous prime is 2221312130287. The next prime is 2221312130369. The reversal of 2221312130312 is 2130312131222.

It is a super-3 number, since 3×2221312130312³ (a number of 38 digits) contains 333 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 152733713 + ... + 152748255.

It is an arithmetic number, because the mean of its divisors is an integer number (71515029600).

Almost surely, 2^{2221312130312} is an apocalyptic number.

2221312130312 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2221312130312, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2288480947200).

2221312130312 is an abundant number, since it is smaller than the sum of its proper divisors (2355649764088).

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

2221312130312 is a wasteful number, since it uses less digits than its factorization.

2221312130312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27186 (or 27182 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 23.

Adding to 2221312130312 its reverse (2130312131222), we get a palindrome (4351624261534).

The spelling of 2221312130312 in words is "two trillion, two hundred twenty-one billion, three hundred twelve million, one hundred thirty thousand, three hundred twelve".