11811022822513 has 4 divisors (see below), whose sum is σ = 11811038632960. Its totient is φ = 11811007012068.

The previous prime is 11811022822429. The next prime is 11811022822597. The reversal of 11811022822513 is 31522822011811.

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 an interprime number because it is at equal distance from previous prime (11811022822429) and next prime (11811022822597).

It is a cyclic number.

It is not a de Polignac number, because 11811022822513 - 2²⁹ = 11810485951601 is a prime.

It is a super-2 number, since 2×11811022822513² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11811022822013) 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, 6726033 + ... + 8298286.

It is an arithmetic number, because the mean of its divisors is an integer number (2952759658240).

Almost surely, 2^{11811022822513} is an apocalyptic number.

It is an amenable number.

11811022822513 is a deficient number, since it is larger than the sum of its proper divisors (15810447).

11811022822513 is an equidigital number, since it uses as much as digits as its factorization.

11811022822513 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15810446.

The product of its (nonzero) digits is 15360, while the sum is 37.

The spelling of 11811022822513 in words is "eleven trillion, eight hundred eleven billion, twenty-two million, eight hundred twenty-two thousand, five hundred thirteen".