100112230121221 has 8 divisors (see below), whose sum is σ = 109656398104920. Its totient is φ = 90974196945408.

The previous prime is 100112230121207. The next prime is 100112230121261. The reversal of 100112230121221 is 122121032211001.

It can be written as a sum of positive squares in 4 ways, for example, as 41545565992225 + 58566664128996 = 6445585^2 + 7652886^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 100112230121221 - 2⁷ = 100112230121093 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (100112230121261) 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, 101533701456 + ... + 101533702441.

It is an arithmetic number, because the mean of its divisors is an integer number (13707049763115).

Almost surely, 2^{100112230121221} is an apocalyptic number.

It is an amenable number.

100112230121221 is a deficient number, since it is larger than the sum of its proper divisors (9544167983699).

100112230121221 is a wasteful number, since it uses less digits than its factorization.

100112230121221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 203067403943.

The product of its (nonzero) digits is 96, while the sum is 19.

Adding to 100112230121221 its reverse (122121032211001), we get a palindrome (222233262332222).

The spelling of 100112230121221 in words is "one hundred trillion, one hundred twelve billion, two hundred thirty million, one hundred twenty-one thousand, two hundred twenty-one".