1320021331112 has 16 divisors (see below), whose sum is σ = 2700043632000. Its totient is φ = 600009695920.

The previous prime is 1320021331099. The next prime is 1320021331151. The reversal of 1320021331112 is 2111331200231.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7500121112 + ... + 7500121287.

It is an arithmetic number, because the mean of its divisors is an integer number (168752727000).

Almost surely, 2^{1320021331112} is an apocalyptic number.

It is an amenable number.

1320021331112 is an abundant number, since it is smaller than the sum of its proper divisors (1380022300888).

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

1320021331112 is a wasteful number, since it uses less digits than its factorization.

1320021331112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15000242416 (or 15000242412 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 20.

Adding to 1320021331112 its reverse (2111331200231), we get a palindrome (3431352531343).

It can be divided in two parts, 13200 and 21331112, that added together give a palindrome (21344312).

The spelling of 1320021331112 in words is "one trillion, three hundred twenty billion, twenty-one million, three hundred thirty-one thousand, one hundred twelve".