1311421526202 has 24 divisors (see below), whose sum is σ = 2716404646176. Its totient is φ = 422066696464.

The previous prime is 1311421526201. The next prime is 1311421526209. The reversal of 1311421526202 is 2026251241131.

It is a self number, because there is not a number n which added to its sum of digits gives 1311421526202.

It is not an unprimeable number, because it can be changed into a prime (1311421526201) 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 11 ways as a sum of consecutive naturals, for example, 129941598 + ... + 129951689.

It is an arithmetic number, because the mean of its divisors is an integer number (113183526924).

Almost surely, 2^{1311421526202} is an apocalyptic number.

1311421526202 is an abundant number, since it is smaller than the sum of its proper divisors (1404983119974).

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

1311421526202 is a wasteful number, since it uses less digits than its factorization.

1311421526202 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 259893350 (or 259893321 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 30.

Adding to 1311421526202 its reverse (2026251241131), we get a palindrome (3337672767333).

The spelling of 1311421526202 in words is "one trillion, three hundred eleven billion, four hundred twenty-one million, five hundred twenty-six thousand, two hundred two".