100021122211 has 4 divisors (see below), whose sum is σ = 100082903400. Its totient is φ = 99959341024.

The previous prime is 100021122209. The next prime is 100021122217. The reversal of 100021122211 is 112221120001.

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

It is a cyclic number.

It is not a de Polignac number, because 100021122211 - 2¹ = 100021122209 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 100021122191 and 100021122200.

It is not an unprimeable number, because it can be changed into a prime (100021122217) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 30888166 + ... + 30891403.

It is an arithmetic number, because the mean of its divisors is an integer number (25020725850).

Almost surely, 2^100021122211 is an apocalyptic number.

100021122211 is a deficient number, since it is larger than the sum of its proper divisors (61781189).

100021122211 is an equidigital number, since it uses as much as digits as its factorization.

100021122211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 61781188.

The product of its (nonzero) digits is 16, while the sum is 13.

Adding to 100021122211 its reverse (112221120001), we get a palindrome (212242242212).

The spelling of 100021122211 in words is "one hundred billion, twenty-one million, one hundred twenty-two thousand, two hundred eleven".