1213100131224 has 16 divisors (see below), whose sum is σ = 3032750328120. Its totient is φ = 404366710400.

The previous prime is 1213100131141. The next prime is 1213100131249. The reversal of 1213100131224 is 4221310013121.

It is a super-2 number, since 2×1213100131224² (a number of 25 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1213100131224.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 25272919377 + ... + 25272919424.

Almost surely, 2^{1213100131224} is an apocalyptic number.

It is an amenable number.

1213100131224 is an abundant number, since it is smaller than the sum of its proper divisors (1819650196896).

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

1213100131224 is a wasteful number, since it uses less digits than its factorization.

1213100131224 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 50545838810 (or 50545838806 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 21.

Adding to 1213100131224 its reverse (4221310013121), we get a palindrome (5434410144345).

The spelling of 1213100131224 in words is "one trillion, two hundred thirteen billion, one hundred million, one hundred thirty-one thousand, two hundred twenty-four".