11221423311 has 48 divisors (see below), whose sum is σ = 17556021888. Its totient is φ = 6356750400.

The previous prime is 11221423267. The next prime is 11221423321. The reversal of 11221423311 is 11332412211.

It is not a de Polignac number, because 11221423311 - 2⁶ = 11221423247 is a prime.

It is a super-2 number, since 2×11221423311² (a number of 21 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11221423321) 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 47 ways as a sum of consecutive naturals, for example, 10266081 + ... + 10267173.

It is an arithmetic number, because the mean of its divisors is an integer number (365750456).

Almost surely, 2^11221423311 is an apocalyptic number.

11221423311 is a deficient number, since it is larger than the sum of its proper divisors (6334598577).

11221423311 is a wasteful number, since it uses less digits than its factorization.

11221423311 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1652 (or 1645 counting only the distinct ones).

The product of its digits is 288, while the sum is 21.

Adding to 11221423311 its reverse (11332412211), we get a palindrome (22553835522).

The spelling of 11221423311 in words is "eleven billion, two hundred twenty-one million, four hundred twenty-three thousand, three hundred eleven".