1213000010243 has 32 divisors (see below), whose sum is σ = 1470199154688. Its totient is φ = 976977907200.

The previous prime is 1213000010237. The next prime is 1213000010267. The reversal of 1213000010243 is 3420100003121.

It is a cyclic number.

It is not a de Polignac number, because 1213000010243 - 2¹⁴ = 1212999993859 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (17).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1213000010743) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 336288746 + ... + 336292352.

It is an arithmetic number, because the mean of its divisors is an integer number (45943723584).

Almost surely, 2^{1213000010243} is an apocalyptic number.

1213000010243 is a deficient number, since it is larger than the sum of its proper divisors (257199144445).

1213000010243 is a wasteful number, since it uses less digits than its factorization.

1213000010243 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7403.

The product of its (nonzero) digits is 144, while the sum is 17.

Adding to 1213000010243 its reverse (3420100003121), we get a palindrome (4633100013364).

The spelling of 1213000010243 in words is "one trillion, two hundred thirteen billion, ten thousand, two hundred forty-three".