1323001312212 has 24 divisors (see below), whose sum is σ = 3087714966336. Its totient is φ = 440898736768.

The previous prime is 1323001312141. The next prime is 1323001312219. The reversal of 1323001312212 is 2122131003231.

It is a super-2 number, since 2×1323001312212² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1323001312219) 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, 12658368 + ... + 12762455.

It is an arithmetic number, because the mean of its divisors is an integer number (128654790264).

Almost surely, 2^{1323001312212} is an apocalyptic number.

1323001312212 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1323001312212 is an abundant number, since it is smaller than the sum of its proper divisors (1764713654124).

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

1323001312212 is a wasteful number, since it uses less digits than its factorization.

1323001312212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25425167 (or 25425165 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 21.

Adding to 1323001312212 its reverse (2122131003231), we get a palindrome (3445132315443).

The spelling of 1323001312212 in words is "one trillion, three hundred twenty-three billion, one million, three hundred twelve thousand, two hundred twelve".