1211322003232 has 96 divisors (see below), whose sum is σ = 2616721075584. Its totient is φ = 547402598400.

The previous prime is 1211322003187. The next prime is 1211322003233. The reversal of 1211322003232 is 2323002231121.

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

It is not an unprimeable number, because it can be changed into a prime (1211322003233) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 106992132 + ... + 107003452.

It is an arithmetic number, because the mean of its divisors is an integer number (27257511204).

Almost surely, 2^{1211322003232} 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 1211322003232, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1308360537792).

1211322003232 is an abundant number, since it is smaller than the sum of its proper divisors (1405399072352).

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

1211322003232 is a wasteful number, since it uses less digits than its factorization.

1211322003232 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13082 (or 13074 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 22.

Adding to 1211322003232 its reverse (2323002231121), we get a palindrome (3534324234353).

The spelling of 1211322003232 in words is "one trillion, two hundred eleven billion, three hundred twenty-two million, three thousand, two hundred thirty-two".