1111013121213 has 80 divisors (see below), whose sum is σ = 1710346164912. Its totient is φ = 718398720000.

The previous prime is 1111013121173. The next prime is 1111013121217. The reversal of 1111013121213 is 3121213101111.

It can be written as a sum of positive squares in 8 ways, for example, as 9054854649 + 1101958266564 = 95157^2 + 1049742^2 .

It is not a de Polignac number, because 1111013121213 - 2¹⁸ = 1111012859069 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1111013121217) by changing a digit.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 355978293 + ... + 355981413.

Almost surely, 2^{1111013121213} is an apocalyptic number.

It is an amenable number.

1111013121213 is a deficient number, since it is larger than the sum of its proper divisors (599333043699).

1111013121213 is a wasteful number, since it uses less digits than its factorization.

1111013121213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4108 (or 4099 counting only the distinct ones).

The product of its (nonzero) digits is 36, while the sum is 18.

Adding to 1111013121213 its reverse (3121213101111), we get a palindrome (4232226222324).

The spelling of 1111013121213 in words is "one trillion, one hundred eleven billion, thirteen million, one hundred twenty-one thousand, two hundred thirteen".