22123100000 has 144 divisors (see below), whose sum is σ = 54765151056. Its totient is φ = 8796480000.

The previous prime is 22123099979. The next prime is 22123100009. The reversal of 22123100000 is 132122.

It is a happy number.

It is a super-2 number, since 2×22123100000² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22123100009) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 19699439 + ... + 19700561.

It is an arithmetic number, because the mean of its divisors is an integer number (380313549).

Almost surely, 2^22123100000 is an apocalyptic number.

22123100000 is a gapful number since it is divisible by the number (20) 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 22123100000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (27382575528).

22123100000 is an abundant number, since it is smaller than the sum of its proper divisors (32642051056).

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

22123100000 is an equidigital number, since it uses as much as digits as its factorization.

22123100000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1355 (or 1327 counting only the distinct ones).

The product of its (nonzero) digits is 24, while the sum is 11.

Adding to 22123100000 its reverse (132122), we get a palindrome (22123232122).

The spelling of 22123100000 in words is "twenty-two billion, one hundred twenty-three million, one hundred thousand".