1223011113213 has 32 divisors (see below), whose sum is σ = 1732327852032. Its totient is φ = 764836934400.

The previous prime is 1223011113169. The next prime is 1223011113217. The reversal of 1223011113213 is 3123111103221.

It is not a de Polignac number, because 1223011113213 - 2¹³ = 1223011105021 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1223011113213.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1223011113217) 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, 72090270 + ... + 72107232.

It is an arithmetic number, because the mean of its divisors is an integer number (54135245376).

Almost surely, 2^{1223011113213} is an apocalyptic number.

It is an amenable number.

1223011113213 is a deficient number, since it is larger than the sum of its proper divisors (509316738819).

1223011113213 is a wasteful number, since it uses less digits than its factorization.

1223011113213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21585.

The product of its (nonzero) digits is 216, while the sum is 21.

Adding to 1223011113213 its reverse (3123111103221), we get a palindrome (4346122216434).

The spelling of 1223011113213 in words is "one trillion, two hundred twenty-three billion, eleven million, one hundred thirteen thousand, two hundred thirteen".