100001201221212 has 24 divisors (see below), whose sum is σ = 233340241687056. Its totient is φ = 33333147239808.

The previous prime is 100001201221211. The next prime is 100001201221213. The reversal of 100001201221212 is 212122102100001.

It is an interprime number because it is at equal distance from previous prime (100001201221211) and next prime (100001201221213).

It is a junction number, because it is equal to n+sod(n) for n = 100001201221191 and 100001201221200.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (100001201221211) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 72601863 + ... + 73966430.

It is an arithmetic number, because the mean of its divisors is an integer number (9722510070294).

Almost surely, 2^{100001201221212} is an apocalyptic number.

100001201221212 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

100001201221212 is an abundant number, since it is smaller than the sum of its proper divisors (133339040465844).

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

100001201221212 is a wasteful number, since it uses less digits than its factorization.

100001201221212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 146625157 (or 146625155 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 15.

Adding to 100001201221212 its reverse (212122102100001), we get a palindrome (312123303321213).

The spelling of 100001201221212 in words is "one hundred trillion, one billion, two hundred one million, two hundred twenty-one thousand, two hundred twelve".