1112231221002 has 144 divisors (see below), whose sum is σ = 2866366077120. Its totient is φ = 322385469120.

The previous prime is 1112231220943. The next prime is 1112231221009. The reversal of 1112231221002 is 2001221322111.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is not an unprimeable number, because it can be changed into a prime (1112231221009) by changing a digit.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 941374 + ... + 1763702.

It is an arithmetic number, because the mean of its divisors is an integer number (19905319980).

Almost surely, 2^{1112231221002} is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1112231221002, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1433183038560).

1112231221002 is an abundant number, since it is smaller than the sum of its proper divisors (1754134856118).

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

1112231221002 is a wasteful number, since it uses less digits than its factorization.

1112231221002 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 822391 (or 822368 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 18.

Adding to 1112231221002 its reverse (2001221322111), we get a palindrome (3113452543113).

The spelling of 1112231221002 in words is "one trillion, one hundred twelve billion, two hundred thirty-one million, two hundred twenty-one thousand, two".