1311202110421 has 8 divisors (see below), whose sum is σ = 1530400032000. Its totient is φ = 1099975022448.

The previous prime is 1311202110389. The next prime is 1311202110437. The reversal of 1311202110421 is 1240112021131.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1311202110421 - 2⁵ = 1311202110389 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1311202114421) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1992708046 + ... + 1992708703.

It is an arithmetic number, because the mean of its divisors is an integer number (191300004000).

Almost surely, 2^{1311202110421} is an apocalyptic number.

It is an amenable number.

1311202110421 is a deficient number, since it is larger than the sum of its proper divisors (219197921579).

1311202110421 is an equidigital number, since it uses as much as digits as its factorization.

1311202110421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3985416803.

The product of its (nonzero) digits is 96, while the sum is 19.

Adding to 1311202110421 its reverse (1240112021131), we get a palindrome (2551314131552).

The spelling of 1311202110421 in words is "one trillion, three hundred eleven billion, two hundred two million, one hundred ten thousand, four hundred twenty-one".