11122221513 has 8 divisors (see below), whose sum is σ = 15970369408. Its totient is φ = 6844443984.

The previous prime is 11122221503. The next prime is 11122221529. The reversal of 11122221513 is 31512222111.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 11122221513 - 2⁶ = 11122221449 is a prime.

It is a super-2 number, since 2×11122221513² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 11122221513.

It is not an unprimeable number, because it can be changed into a prime (11122221503) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 142592545 + ... + 142592622.

It is an arithmetic number, because the mean of its divisors is an integer number (1996296176).

Almost surely, 2^11122221513 is an apocalyptic number.

11122221513 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

It is an amenable number.

11122221513 is a deficient number, since it is larger than the sum of its proper divisors (4848147895).

11122221513 is a wasteful number, since it uses less digits than its factorization.

11122221513 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 285185183.

The product of its digits is 240, while the sum is 21.

Adding to 11122221513 its reverse (31512222111), we get a palindrome (42634443624).

The spelling of 11122221513 in words is "eleven billion, one hundred twenty-two million, two hundred twenty-one thousand, five hundred thirteen".