1213321133101 has 12 divisors (see below), whose sum is σ = 1524172002976. Its totient is φ = 945445038120.

The previous prime is 1213321133099. The next prime is 1213321133111. The reversal of 1213321133101 is 1013311233121.

It is not a de Polignac number, because 1213321133101 - 2¹ = 1213321133099 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1213321133111) 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 11 ways as a sum of consecutive naturals, for example, 716245395 + ... + 716247088.

Almost surely, 2^{1213321133101} is an apocalyptic number.

1213321133101 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

1213321133101 is a deficient number, since it is larger than the sum of its proper divisors (310850869875).

1213321133101 is a wasteful number, since it uses less digits than its factorization.

1213321133101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1432492512 (or 1432492501 counting only the distinct ones).

The product of its (nonzero) digits is 324, while the sum is 22.

Adding to 1213321133101 its reverse (1013311233121), we get a palindrome (2226632366222).

The spelling of 1213321133101 in words is "one trillion, two hundred thirteen billion, three hundred twenty-one million, one hundred thirty-three thousand, one hundred one".