1328975029212 has 12 divisors (see below), whose sum is σ = 3100941734856. Its totient is φ = 442991676400.

The previous prime is 1328975029153. The next prime is 1328975029219. The reversal of 1328975029212 is 2129205798231.

It is a tau number, because it is divible by the number of its divisors (12).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1328975029219) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 55373959539 + ... + 55373959562.

It is an arithmetic number, because the mean of its divisors is an integer number (258411811238).

Almost surely, 2^{1328975029212} is an apocalyptic number.

1328975029212 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1328975029212 is an abundant number, since it is smaller than the sum of its proper divisors (1771966705644).

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

1328975029212 is a wasteful number, since it uses less digits than its factorization.

1328975029212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 110747919108 (or 110747919106 counting only the distinct ones).

The product of its (nonzero) digits is 1088640, while the sum is 51.

The spelling of 1328975029212 in words is "one trillion, three hundred twenty-eight billion, nine hundred seventy-five million, twenty-nine thousand, two hundred twelve".