11213221013 has 4 divisors (see below), whose sum is σ = 11803390560. Its totient is φ = 10623051468.

The previous prime is 11213221009. The next prime is 11213221031. The reversal of 11213221013 is 31012231211.

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 not a de Polignac number, because 11213221013 - 2² = 11213221009 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 11213220982 and 11213221000.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11213221213) 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, 295084745 + ... + 295084782.

It is an arithmetic number, because the mean of its divisors is an integer number (2950847640).

Almost surely, 2^11213221013 is an apocalyptic number.

It is an amenable number.

11213221013 is a deficient number, since it is larger than the sum of its proper divisors (590169547).

11213221013 is an equidigital number, since it uses as much as digits as its factorization.

11213221013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 590169546.

The product of its (nonzero) digits is 72, while the sum is 17.

Adding to 11213221013 its reverse (31012231211), we get a palindrome (42225452224).

The spelling of 11213221013 in words is "eleven billion, two hundred thirteen million, two hundred twenty-one thousand, thirteen".