11220123013 has 4 divisors (see below), whose sum is σ = 12240134208. Its totient is φ = 10200111820.

The previous prime is 11220122989. The next prime is 11220123077. The reversal of 11220123013 is 31032102211.

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 a de Polignac number, because none of the positive numbers 2^k-11220123013 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 (11220123413) 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, 510005581 + ... + 510005602.

It is an arithmetic number, because the mean of its divisors is an integer number (3060033552).

Almost surely, 2^11220123013 is an apocalyptic number.

It is an amenable number.

11220123013 is a deficient number, since it is larger than the sum of its proper divisors (1020011195).

11220123013 is a wasteful number, since it uses less digits than its factorization.

11220123013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1020011194.

The product of its (nonzero) digits is 72, while the sum is 16.

Adding to 11220123013 its reverse (31032102211), we get a palindrome (42252225224).

The spelling of 11220123013 in words is "eleven billion, two hundred twenty million, one hundred twenty-three thousand, thirteen".