100130110211221 has 6 divisors (see below), whose sum is σ = 106366587664130. Its totient is φ = 94240103727936.

The previous prime is 100130110211149. The next prime is 100130110211227. The reversal of 100130110211221 is 122112011031001.

It is a happy number.

It can be written as a sum of positive squares in 3 ways, for example, as 33454540320100 + 66675569891121 = 5783990^2 + 8165511^2 .

It is not a de Polignac number, because 100130110211221 - 2⁷ = 100130110211093 is a prime.

It is a super-2 number, since 2×100130110211221² (a number of 29 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 100130110211195 and 100130110211204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (100130110211227) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 173235484506 + ... + 173235485083.

Almost surely, 2^{100130110211221} is an apocalyptic number.

It is an amenable number.

100130110211221 is a deficient number, since it is larger than the sum of its proper divisors (6236477452909).

100130110211221 is an equidigital number, since it uses as much as digits as its factorization.

100130110211221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 346470969623 (or 346470969606 counting only the distinct ones).

The product of its (nonzero) digits is 24, while the sum is 16.

Adding to 100130110211221 its reverse (122112011031001), we get a palindrome (222242121242222).

The spelling of 100130110211221 in words is "one hundred trillion, one hundred thirty billion, one hundred ten million, two hundred eleven thousand, two hundred twenty-one".