122212210000 has 100 divisors (see below), whose sum is σ = 299635336000. Its totient is φ = 48265776000.

The previous prime is 122212209979. The next prime is 122212210007. The reversal of 122212210000 is 12212221.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (100).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (122212210007) 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 19 ways as a sum of consecutive naturals, for example, 712651 + ... + 867349.

It is an arithmetic number, because the mean of its divisors is an integer number (2996353360).

Almost surely, 2^122212210000 is an apocalyptic number.

122212210000 is a gapful number since it is divisible by the number (10) 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 122212210000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (149817668000).

122212210000 is an abundant number, since it is smaller than the sum of its proper divisors (177423126000).

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

122212210000 is an equidigital number, since it uses as much as digits as its factorization.

122212210000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 154806 (or 154785 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 13.

Adding to 122212210000 its reverse (12212221), we get a palindrome (122224422221).

The spelling of 122212210000 in words is "one hundred twenty-two billion, two hundred twelve million, two hundred ten thousand".