1111202131213 has 4 divisors (see below), whose sum is σ = 1111963751680. Its totient is φ = 1110440510748.

The previous prime is 1111202131187. The next prime is 1111202131261. The reversal of 1111202131213 is 3121312021111.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 1111202131213 - 2¹³ = 1111202123021 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 (1111202131513) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 380808045 + ... + 380810962.

It is an arithmetic number, because the mean of its divisors is an integer number (277990937920).

Almost surely, 2^{1111202131213} is an apocalyptic number.

It is an amenable number.

1111202131213 is a deficient number, since it is larger than the sum of its proper divisors (761620467).

1111202131213 is an equidigital number, since it uses as much as digits as its factorization.

1111202131213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 761620466.

The product of its (nonzero) digits is 72, while the sum is 19.

Adding to 1111202131213 its reverse (3121312021111), we get a palindrome (4232514152324).

The spelling of 1111202131213 in words is "one trillion, one hundred eleven billion, two hundred two million, one hundred thirty-one thousand, two hundred thirteen".