11220100213 has 12 divisors (see below), whose sum is σ = 13071736812. Its totient is φ = 9602651520.

The previous prime is 11220100169. The next prime is 11220100217. The reversal of 11220100213 is 31200102211.

It can be written as a sum of positive squares in 2 ways, for example, as 9161935524 + 2058164689 = 95718^2 + 45367^2 .

It is not a de Polignac number, because 11220100213 - 2²⁵ = 11186545781 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 11220100193 and 11220100202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11220100217) 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, 140820 + ... + 205597.

It is an arithmetic number, because the mean of its divisors is an integer number (1089311401).

Almost surely, 2^11220100213 is an apocalyptic number.

It is an amenable number.

11220100213 is a deficient number, since it is larger than the sum of its proper divisors (1851636599).

11220100213 is an equidigital number, since it uses as much as digits as its factorization.

11220100213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 347092 (or 347085 counting only the distinct ones).

The product of its (nonzero) digits is 24, while the sum is 13.

Adding to 11220100213 its reverse (31200102211), we get a palindrome (42420202424).

The spelling of 11220100213 in words is "eleven billion, two hundred twenty million, one hundred thousand, two hundred thirteen".