1321102112 has 48 divisors (see below), whose sum is σ = 2877384384. Its totient is φ = 592032000.

The previous prime is 1321102109. The next prime is 1321102121. The reversal of 1321102112 is 2112011231.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1439 + ... + 51422.

It is an arithmetic number, because the mean of its divisors is an integer number (59945508).

Almost surely, 2^1321102112 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1321102112, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1438692192).

1321102112 is an abundant number, since it is smaller than the sum of its proper divisors (1556282272).

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

1321102112 is a wasteful number, since it uses less digits than its factorization.

1321102112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 52953 (or 52945 counting only the distinct ones).

The product of its (nonzero) digits is 24, while the sum is 14.

The square root of 1321102112 is about 36346.9684017801. The cubic root of 1321102112 is about 1097.2665220797.

Adding to 1321102112 its reverse (2112011231), we get a palindrome (3433113343).

The spelling of 1321102112 in words is "one billion, three hundred twenty-one million, one hundred two thousand, one hundred twelve".