1311021322002 has 48 divisors (see below), whose sum is σ = 3260639633472. Its totient is φ = 372927391200.

The previous prime is 1311021322001. The next prime is 1311021322021. The reversal of 1311021322002 is 2002231201131.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is not an unprimeable number, because it can be changed into a prime (1311021322001) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 22889749 + ... + 22946952.

It is an arithmetic number, because the mean of its divisors is an integer number (67929992364).

Almost surely, 2^{1311021322002} is an apocalyptic number.

1311021322002 is an abundant number, since it is smaller than the sum of its proper divisors (1949618311470).

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

1311021322002 is a wasteful number, since it uses less digits than its factorization.

1311021322002 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45836943 (or 45836940 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 18.

Adding to 1311021322002 its reverse (2002231201131), we get a palindrome (3313252523133).

The spelling of 1311021322002 in words is "one trillion, three hundred eleven billion, twenty-one million, three hundred twenty-two thousand, two".