1213100112213 has 48 divisors (see below), whose sum is σ = 2012474280960. Its totient is φ = 696407911200.

The previous prime is 1213100112187. The next prime is 1213100112241. The reversal of 1213100112213 is 3122110013121.

1213100112213 is a `hidden beast` number, since 121 + 310 + 0 + 11 + 221 + 3 = 666.

It is not a de Polignac number, because 1213100112213 - 2⁸ = 1213100111957 is a prime.

It is a super-2 number, since 2×1213100112213² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1213100112113) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 12862318 + ... + 12956288.

It is an arithmetic number, because the mean of its divisors is an integer number (41926547520).

Almost surely, 2^{1213100112213} is an apocalyptic number.

It is an amenable number.

1213100112213 is a deficient number, since it is larger than the sum of its proper divisors (799374168747).

1213100112213 is a wasteful number, since it uses less digits than its factorization.

1213100112213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 100870 (or 100867 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 18.

Adding to 1213100112213 its reverse (3122110013121), we get a palindrome (4335210125334).

The spelling of 1213100112213 in words is "one trillion, two hundred thirteen billion, one hundred million, one hundred twelve thousand, two hundred thirteen".