100112201201221 has 4 divisors (see below), whose sum is σ = 109213310401344. Its totient is φ = 91011092001100.

The previous prime is 100112201201213. The next prime is 100112201201239. The reversal of 100112201201221 is 122102102211001.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 100112201201221 - 2³ = 100112201201213 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 100112201201195 and 100112201201204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (100112201201251) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4550554600045 + ... + 4550554600066.

It is an arithmetic number, because the mean of its divisors is an integer number (27303327600336).

Almost surely, 2^{100112201201221} is an apocalyptic number.

100112201201221 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

100112201201221 is a deficient number, since it is larger than the sum of its proper divisors (9101109200123).

100112201201221 is an equidigital number, since it uses as much as digits as its factorization.

100112201201221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9101109200122.

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

Adding to 100112201201221 its reverse (122102102211001), we get a palindrome (222214303412222).

The spelling of 100112201201221 in words is "one hundred trillion, one hundred twelve billion, two hundred one million, two hundred one thousand, two hundred twenty-one".