11312222022 has 24 divisors (see below), whose sum is σ = 25417586376. Its totient is φ = 3770740512.

The previous prime is 11312222017. The next prime is 11312222023. The reversal of 11312222022 is 22022221311.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 11312221986 and 11312222004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11312222023) 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, 11637603 + ... + 11638574.

It is an arithmetic number, because the mean of its divisors is an integer number (1059066099).

Almost surely, 2^11312222022 is an apocalyptic number.

11312222022 is an abundant number, since it is smaller than the sum of its proper divisors (14105364354).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

11312222022 is an equidigital number, since it uses as much as digits as its factorization.

11312222022 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23276194 (or 23276182 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 18.

Adding to 11312222022 its reverse (22022221311), we get a palindrome (33334443333).

The spelling of 11312222022 in words is "eleven billion, three hundred twelve million, two hundred twenty-two thousand, twenty-two".