1211330320320 has 112 divisors (see below), whose sum is σ = 3846718402560. Its totient is φ = 322958877696.

The previous prime is 1211330320297. The next prime is 1211330320367. The reversal of 1211330320320 is 230230331121.

It is a super-2 number, since 2×1211330320320² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4948329 + ... + 5187351.

Almost surely, 2^{1211330320320} is an apocalyptic number.

1211330320320 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1211330320320 is an abundant number, since it is smaller than the sum of its proper divisors (2635388082240).

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

1211330320320 is a wasteful number, since it uses less digits than its factorization.

1211330320320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 244322 (or 244312 counting only the distinct ones).

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

Adding to 1211330320320 its reverse (230230331121), we get a palindrome (1441560651441).

The spelling of 1211330320320 in words is "one trillion, two hundred eleven billion, three hundred thirty million, three hundred twenty thousand, three hundred twenty".