20311223312222 has 16 divisors (see below), whose sum is σ = 31211358260544. Its totient is φ = 9907459920000.

The previous prime is 20311223312209. The next prime is 20311223312257. The reversal of 20311223312222 is 22221332211302.

It is a junction number, because it is equal to n+sod(n) for n = 20311223312191 and 20311223312200.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3869279 + ... + 7456122.

It is an arithmetic number, because the mean of its divisors is an integer number (1950709891284).

Almost surely, 2^{20311223312222} is an apocalyptic number.

20311223312222 is a deficient number, since it is larger than the sum of its proper divisors (10900134948322).

20311223312222 is a wasteful number, since it uses less digits than its factorization.

20311223312222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11347315.

The product of its (nonzero) digits is 3456, while the sum is 26.

Adding to 20311223312222 its reverse (22221332211302), we get a palindrome (42532555523524).

The spelling of 20311223312222 in words is "twenty trillion, three hundred eleven billion, two hundred twenty-three million, three hundred twelve thousand, two hundred twenty-two".