1321112100112 has 20 divisors (see below), whose sum is σ = 2925319650496. Its totient is φ = 566190900000.

The previous prime is 1321112100079. The next prime is 1321112100127. The reversal of 1321112100112 is 2110012111231.

It is a happy number.

It is a super-2 number, since 2×1321112100112² (a number of 25 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (16).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5897821764 + ... + 5897821987.

Almost surely, 2^{1321112100112} is an apocalyptic number.

It is an amenable number.

1321112100112 is an abundant number, since it is smaller than the sum of its proper divisors (1604207550384).

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

1321112100112 is a wasteful number, since it uses less digits than its factorization.

1321112100112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11795643766 (or 11795643760 counting only the distinct ones).

The product of its (nonzero) digits is 24, while the sum is 16.

Adding to 1321112100112 its reverse (2110012111231), we get a palindrome (3431124211343).

The spelling of 1321112100112 in words is "one trillion, three hundred twenty-one billion, one hundred twelve million, one hundred thousand, one hundred twelve".