100122212221212 has 96 divisors (see below), whose sum is σ = 238023056404224. Its totient is φ = 32748781824000.

The previous prime is 100122212221177. The next prime is 100122212221217. The reversal of 100122212221212 is 212122212221001.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (100122212221217) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 691852462 + ... + 691997162.

It is an arithmetic number, because the mean of its divisors is an integer number (2479406837544).

Almost surely, 2^{100122212221212} is an apocalyptic number.

100122212221212 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

100122212221212 is an abundant number, since it is smaller than the sum of its proper divisors (137900844183012).

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

100122212221212 is a wasteful number, since it uses less digits than its factorization.

100122212221212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 148099 (or 148097 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 21.

Adding to 100122212221212 its reverse (212122212221001), we get a palindrome (312244424442213).

The spelling of 100122212221212 in words is "one hundred trillion, one hundred twenty-two billion, two hundred twelve million, two hundred twenty-one thousand, two hundred twelve".