1311211230000 has 200 divisors, whose sum is σ = 4837446121728. Its totient is φ = 299705376000.

The previous prime is 1311211229989. The next prime is 1311211230031. The reversal of 1311211230000 is 321121131.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (200).

It is a super-2 number, since 2×1311211230000² (a number of 25 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is an unprimeable number.

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 39 ways as a sum of consecutive naturals, for example, 2911932 + ... + 3331931.

Almost surely, 2^{1311211230000} is an apocalyptic number.

1311211230000 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1311211230000 is an abundant number, since it is smaller than the sum of its proper divisors (3526234891728).

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

1311211230000 is an equidigital number, since it uses as much as digits as its factorization.

1311211230000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6243901 (or 6243880 counting only the distinct ones).

The product of its (nonzero) digits is 36, while the sum is 15.

Adding to 1311211230000 its reverse (321121131), we get a palindrome (1311532351131).

The spelling of 1311211230000 in words is "one trillion, three hundred eleven billion, two hundred eleven million, two hundred thirty thousand".