122100112212100 has 144 divisors (see below), whose sum is σ = 292037058432000. Its totient is φ = 43940712960000.

The previous prime is 122100112212019. The next prime is 122100112212109. The reversal of 122100112212100 is 1212211001221.

It is not an unprimeable number, because it can be changed into a prime (122100112212109) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 248507476 + ... + 248998324.

It is an arithmetic number, because the mean of its divisors is an integer number (2028035128000).

Almost surely, 2^{122100112212100} is an apocalyptic number.

122100112212100 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 122100112212100, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (146018529216000).

122100112212100 is an abundant number, since it is smaller than the sum of its proper divisors (169936946219900).

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

122100112212100 is a wasteful number, since it uses less digits than its factorization.

122100112212100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 493214 (or 493207 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 16.

Adding to 122100112212100 its reverse (1212211001221), we get a palindrome (123312323213321).

The spelling of 122100112212100 in words is "one hundred twenty-two trillion, one hundred billion, one hundred twelve million, two hundred twelve thousand, one hundred".