1311221212132 has 24 divisors (see below), whose sum is σ = 2471184072000. Its totient is φ = 605170106016.

The previous prime is 1311221212121. The next prime is 1311221212199. The reversal of 1311221212132 is 2312121221131.

It is a happy number.

It is a super-2 number, since 2×1311221212132² (a number of 25 digits) contains 22 as substring.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 4507719 + ... + 4789777.

It is an arithmetic number, because the mean of its divisors is an integer number (102966003000).

Almost surely, 2^{1311221212132} is an apocalyptic number.

It is an amenable number.

1311221212132 is a deficient number, since it is larger than the sum of its proper divisors (1159962859868).

1311221212132 is a wasteful number, since it uses less digits than its factorization.

1311221212132 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 371475 (or 371473 counting only the distinct ones).

The product of its digits is 288, while the sum is 22.

Adding to 1311221212132 its reverse (2312121221131), we get a palindrome (3623342433263).

The spelling of 1311221212132 in words is "one trillion, three hundred eleven billion, two hundred twenty-one million, two hundred twelve thousand, one hundred thirty-two".