1211313322320 has 40 divisors (see below), whose sum is σ = 3755071299936. Its totient is φ = 323016885888.

The previous prime is 1211313322243. The next prime is 1211313322321. The reversal of 1211313322320 is 232233131121.

It is a tau number, because it is divible by the number of its divisors (40).

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1211313322321) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2523569182 + ... + 2523569661.

Almost surely, 2^{1211313322320} is an apocalyptic number.

1211313322320 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1211313322320 is an abundant number, since it is smaller than the sum of its proper divisors (2543757977616).

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

1211313322320 is a wasteful number, since it uses less digits than its factorization.

1211313322320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5047138859 (or 5047138853 counting only the distinct ones).

The product of its (nonzero) digits is 1296, while the sum is 24.

Adding to 1211313322320 its reverse (232233131121), we get a palindrome (1443546453441).

The spelling of 1211313322320 in words is "one trillion, two hundred eleven billion, three hundred thirteen million, three hundred twenty-two thousand, three hundred twenty".