2011321111213 has 4 divisors (see below), whose sum is σ = 2044293588508. Its totient is φ = 1978348633920.

The previous prime is 2011321111153. The next prime is 2011321111253. The reversal of 2011321111213 is 3121111231102.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 56531244169 + 1954789867044 = 237763^2 + 1398138^2 .

It is a cyclic number.

It is not a de Polignac number, because 2011321111213 - 2²⁵ = 2011287556781 is a prime.

It is a super-2 number, since 2×2011321111213² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2011321111253) 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, 16486238556 + ... + 16486238677.

It is an arithmetic number, because the mean of its divisors is an integer number (511073397127).

Almost surely, 2^{2011321111213} is an apocalyptic number.

It is an amenable number.

2011321111213 is a deficient number, since it is larger than the sum of its proper divisors (32972477295).

2011321111213 is an equidigital number, since it uses as much as digits as its factorization.

2011321111213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32972477294.

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

Adding to 2011321111213 its reverse (3121111231102), we get a palindrome (5132432342315).

The spelling of 2011321111213 in words is "two trillion, eleven billion, three hundred twenty-one million, one hundred eleven thousand, two hundred thirteen".