1311221222202 has 8 divisors (see below), whose sum is σ = 2622442444416. Its totient is φ = 437073740732.

The previous prime is 1311221222197. The next prime is 1311221222209. The reversal of 1311221222202 is 2022221221131.

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

1311221222202 is an admirable number.

It is not an unprimeable number, because it can be changed into a prime (1311221222209) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 109268435178 + ... + 109268435189.

It is an arithmetic number, because the mean of its divisors is an integer number (327805305552).

Almost surely, 2^{1311221222202} is an apocalyptic number.

1311221222202 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

1311221222202 is a wasteful number, since it uses less digits than its factorization.

1311221222202 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 218536870372.

The product of its (nonzero) digits is 384, while the sum is 21.

Adding to 1311221222202 its reverse (2022221221131), we get a palindrome (3333442443333).

The spelling of 1311221222202 in words is "one trillion, three hundred eleven billion, two hundred twenty-one million, two hundred twenty-two thousand, two hundred two".