100210100111221 has 4 divisors (see below), whose sum is σ = 102540567555712. Its totient is φ = 97879632666732.

The previous prime is 100210100111203. The next prime is 100210100111257. The reversal of 100210100111221 is 122111001012001.

It is a happy number.

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 100210100111221 - 2¹⁵ = 100210100078453 is a prime.

It is a super-2 number, since 2×100210100111221² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (100210100111281) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1165233722181 + ... + 1165233722266.

It is an arithmetic number, because the mean of its divisors is an integer number (25635141888928).

Almost surely, 2^{100210100111221} is an apocalyptic number.

It is an amenable number.

100210100111221 is a deficient number, since it is larger than the sum of its proper divisors (2330467444491).

100210100111221 is an equidigital number, since it uses as much as digits as its factorization.

100210100111221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2330467444490.

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

Adding to 100210100111221 its reverse (122111001012001), we get a palindrome (222321101123222).

The spelling of 100210100111221 in words is "one hundred trillion, two hundred ten billion, one hundred million, one hundred eleven thousand, two hundred twenty-one".