20311343221222 has 8 divisors (see below), whose sum is σ = 32259192174936. Its totient is φ = 9558279162912.

The previous prime is 20311343221199. The next prime is 20311343221243. The reversal of 20311343221222 is 22212234311302.

It is a happy number.

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

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 298696223808 + ... + 298696223875.

It is an arithmetic number, because the mean of its divisors is an integer number (4032399021867).

Almost surely, 2^{20311343221222} is an apocalyptic number.

20311343221222 is a deficient number, since it is larger than the sum of its proper divisors (11947848953714).

20311343221222 is a wasteful number, since it uses less digits than its factorization.

20311343221222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 597392447702.

The product of its (nonzero) digits is 6912, while the sum is 28.

Adding to 20311343221222 its reverse (22212234311302), we get a palindrome (42523577532524).

The spelling of 20311343221222 in words is "twenty trillion, three hundred eleven billion, three hundred forty-three million, two hundred twenty-one thousand, two hundred twenty-two".