1321200333112 has 32 divisors (see below), whose sum is σ = 2819953284480. Its totient is φ = 574434926560.

The previous prime is 1321200333031. The next prime is 1321200333113. The reversal of 1321200333112 is 2113330021231.

It is a Harshad number since it is a multiple of its sum of digits (22).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1321200333113) 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, 326381458 + ... + 326385505.

It is an arithmetic number, because the mean of its divisors is an integer number (88123540140).

Almost surely, 2^{1321200333112} is an apocalyptic number.

It is an amenable number.

1321200333112 is an abundant number, since it is smaller than the sum of its proper divisors (1498752951368).

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

1321200333112 is a wasteful number, since it uses less digits than its factorization.

1321200333112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 652767003 (or 652766999 counting only the distinct ones).

The product of its (nonzero) digits is 648, while the sum is 22.

Adding to 1321200333112 its reverse (2113330021231), we get a palindrome (3434530354343).

The spelling of 1321200333112 in words is "one trillion, three hundred twenty-one billion, two hundred million, three hundred thirty-three thousand, one hundred twelve".