1211013002320 has 240 divisors, whose sum is σ = 3287699198784. Its totient is φ = 413097062400.

The previous prime is 1211013002299. The next prime is 1211013002321. The reversal of 1211013002320 is 232003101121.

It is a Harshad number since it is a multiple of its sum of digits (16).

It is a junction number, because it is equal to n+sod(n) for n = 1211013002294 and 1211013002303.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1211013002321) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 50507935 + ... + 50531905.

Almost surely, 2^{1211013002320} is an apocalyptic number.

1211013002320 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 1211013002320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1643849599392).

1211013002320 is an abundant number, since it is smaller than the sum of its proper divisors (2076686196464).

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

1211013002320 is a wasteful number, since it uses less digits than its factorization.

1211013002320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24330 (or 24313 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 16.

Adding to 1211013002320 its reverse (232003101121), we get a palindrome (1443016103441).

The spelling of 1211013002320 in words is "one trillion, two hundred eleven billion, thirteen million, two thousand, three hundred twenty".