10100210112221 has 4 divisors (see below), whose sum is σ = 10104347849244. Its totient is φ = 10096072375200.

The previous prime is 10100210112199. The next prime is 10100210112247. The reversal of 10100210112221 is 12221101200101.

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 911096976196 + 9189113136025 = 954514^2 + 3031355^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-10100210112221 is a prime.

It is a super-2 number, since 2×10100210112221² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 10100210112196 and 10100210112205.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10100213112221) 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, 2068864850 + ... + 2068869731.

It is an arithmetic number, because the mean of its divisors is an integer number (2526086962311).

Almost surely, 2^{10100210112221} is an apocalyptic number.

It is an amenable number.

10100210112221 is a deficient number, since it is larger than the sum of its proper divisors (4137737023).

10100210112221 is an equidigital number, since it uses as much as digits as its factorization.

10100210112221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4137737022.

The product of its (nonzero) digits is 16, while the sum is 14.

Adding to 10100210112221 its reverse (12221101200101), we get a palindrome (22321311312322).

The spelling of 10100210112221 in words is "ten trillion, one hundred billion, two hundred ten million, one hundred twelve thousand, two hundred twenty-one".