100010112210121 has 4 divisors (see below), whose sum is σ = 100528299320212. Its totient is φ = 99491925100032.

The previous prime is 100010112210103. The next prime is 100010112210131. The reversal of 100010112210121 is 121012211010001.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 28106580846096 + 71903531364025 = 5301564^2 + 8479595^2 .

It is a cyclic number.

It is not a de Polignac number, because 100010112210121 - 2¹⁷ = 100010112079049 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (100010112210131) 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, 259093554756 + ... + 259093555141.

It is an arithmetic number, because the mean of its divisors is an integer number (25132074830053).

Almost surely, 2^{100010112210121} is an apocalyptic number.

It is an amenable number.

100010112210121 is a deficient number, since it is larger than the sum of its proper divisors (518187110091).

100010112210121 is an equidigital number, since it uses as much as digits as its factorization.

100010112210121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 518187110090.

The product of its (nonzero) digits is 8, while the sum is 13.

Adding to 100010112210121 its reverse (121012211010001), we get a palindrome (221022323220122).

The spelling of 100010112210121 in words is "one hundred trillion, ten billion, one hundred twelve million, two hundred ten thousand, one hundred twenty-one".