20311322222 has 8 divisors (see below), whose sum is σ = 30516686616. Its totient is φ = 10139093352.

The previous prime is 20311322173. The next prime is 20311322263. The reversal of 20311322222 is 22222311302.

It is a happy number.

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

It is a super-2 number, since 2×20311322222² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 20311322194 and 20311322203.

It is a congruent number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 8282348 + ... + 8284799.

It is an arithmetic number, because the mean of its divisors is an integer number (3814585827).

Almost surely, 2^20311322222 is an apocalyptic number.

20311322222 is a deficient number, since it is larger than the sum of its proper divisors (10205364394).

20311322222 is a wasteful number, since it uses less digits than its factorization.

20311322222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16567762.

The product of its (nonzero) digits is 576, while the sum is 20.

Adding to 20311322222 its reverse (22222311302), we get a palindrome (42533633524).

The spelling of 20311322222 in words is "twenty billion, three hundred eleven million, three hundred twenty-two thousand, two hundred twenty-two".