1213101203312 has 20 divisors (see below), whose sum is σ = 2350420087296. Its totient is φ = 606541180800.

The previous prime is 1213101203267. The next prime is 1213101203371. The reversal of 1213101203312 is 2133021013121.

It is a happy number.

It is a super-2 number, since 2×1213101203312² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

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 3 ways as a sum of consecutive naturals, for example, 538988 + ... + 1648244.

Almost surely, 2^{1213101203312} is an apocalyptic number.

It is an amenable number.

1213101203312 is a deficient number, since it is larger than the sum of its proper divisors (1137318883984).

1213101203312 is a wasteful number, since it uses less digits than its factorization.

1213101203312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1177616 (or 1177610 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 20.

Adding to 1213101203312 its reverse (2133021013121), we get a palindrome (3346122216433).

The spelling of 1213101203312 in words is "one trillion, two hundred thirteen billion, one hundred one million, two hundred three thousand, three hundred twelve".