1213001011213 has 16 divisors (see below), whose sum is σ = 1221335438400. Its totient is φ = 1204699478400.

The previous prime is 1213001011193. The next prime is 1213001011217. The reversal of 1213001011213 is 3121101003121.

It is a happy number.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1213001011213 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1213001011217) 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 15 ways as a sum of consecutive naturals, for example, 350475303 + ... + 350478763.

It is an arithmetic number, because the mean of its divisors is an integer number (76333464900).

Almost surely, 2^{1213001011213} is an apocalyptic number.

It is an amenable number.

1213001011213 is a deficient number, since it is larger than the sum of its proper divisors (8334427187).

1213001011213 is a wasteful number, since it uses less digits than its factorization.

1213001011213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7548.

The product of its (nonzero) digits is 36, while the sum is 16.

Adding to 1213001011213 its reverse (3121101003121), we get a palindrome (4334102014334).

The spelling of 1213001011213 in words is "one trillion, two hundred thirteen billion, one million, eleven thousand, two hundred thirteen".