20223112111312 has 80 divisors (see below), whose sum is σ = 45003036049920. Its totient is φ = 8706769315200.

The previous prime is 20223112111193. The next prime is 20223112111357. The reversal of 20223112111312 is 21311121132202.

It is a happy number.

It is a super-2 number, since 2×20223112111312² (a number of 27 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (22).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 16125637 + ... + 17334427.

It is an arithmetic number, because the mean of its divisors is an integer number (562537950624).

Almost surely, 2^{20223112111312} is an apocalyptic number.

20223112111312 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20223112111312, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (22501518024960).

20223112111312 is an abundant number, since it is smaller than the sum of its proper divisors (24779923938608).

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

20223112111312 is a wasteful number, since it uses less digits than its factorization.

20223112111312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1213832 (or 1213826 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 22.

Adding to 20223112111312 its reverse (21311121132202), we get a palindrome (41534233243514).

The spelling of 20223112111312 in words is "twenty trillion, two hundred twenty-three billion, one hundred twelve million, one hundred eleven thousand, three hundred twelve".