1211233003320 has 128 divisors (see below), whose sum is σ = 3656963039040. Its totient is φ = 320929873920.

The previous prime is 1211233003313. The next prime is 1211233003399. The reversal of 1211233003320 is 233003321121.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 35212530 + ... + 35246910.

Almost surely, 2^{1211233003320} is an apocalyptic number.

1211233003320 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1211233003320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1828481519520).

1211233003320 is an abundant number, since it is smaller than the sum of its proper divisors (2445730035720).

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

1211233003320 is a wasteful number, since it uses less digits than its factorization.

1211233003320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36265 (or 36261 counting only the distinct ones).

The product of its (nonzero) digits is 648, while the sum is 21.

Adding to 1211233003320 its reverse (233003321121), we get a palindrome (1444236324441).

The spelling of 1211233003320 in words is "one trillion, two hundred eleven billion, two hundred thirty-three million, three thousand, three hundred twenty".