100010012221 has 4 divisors (see below), whose sum is σ = 114297156832. Its totient is φ = 85722867612.

The previous prime is 100010012213. The next prime is 100010012251. The reversal of 100010012221 is 122210010001.

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 100010012221 - 2³ = 100010012213 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 100010012198 and 100010012207.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (100010012251) 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, 7143572295 + ... + 7143572308.

It is an arithmetic number, because the mean of its divisors is an integer number (28574289208).

Almost surely, 2^100010012221 is an apocalyptic number.

It is an amenable number.

100010012221 is a deficient number, since it is larger than the sum of its proper divisors (14287144611).

100010012221 is an equidigital number, since it uses as much as digits as its factorization.

100010012221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14287144610.

The product of its (nonzero) digits is 8, while the sum is 10.

Adding to 100010012221 its reverse (122210010001), we get a palindrome (222220022222).

The spelling of 100010012221 in words is "one hundred billion, ten million, twelve thousand, two hundred twenty-one".