1211303003013 has 12 divisors (see below), whose sum is σ = 1749964946028. Its totient is φ = 807394541760.

The previous prime is 1211303002999. The next prime is 1211303003107. The reversal of 1211303003013 is 3103003031121.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 519874166529 + 691428836484 = 721023^2 + 831522^2 .

It is not a de Polignac number, because 1211303003013 - 2¹⁰ = 1211303001989 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1211303003213) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 11678298 + ... + 11781563.

It is an arithmetic number, because the mean of its divisors is an integer number (145830412169).

Almost surely, 2^{1211303003013} is an apocalyptic number.

It is an amenable number.

1211303003013 is a deficient number, since it is larger than the sum of its proper divisors (538661943015).

1211303003013 is a wasteful number, since it uses less digits than its factorization.

1211303003013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23465604 (or 23465601 counting only the distinct ones).

The product of its (nonzero) digits is 162, while the sum is 18.

Adding to 1211303003013 its reverse (3103003031121), we get a palindrome (4314306034134).

The spelling of 1211303003013 in words is "one trillion, two hundred eleven billion, three hundred three million, three thousand, thirteen".