100222002221 has 4 divisors (see below), whose sum is σ = 109333093344. Its totient is φ = 91110911100.

The previous prime is 100222002197. The next prime is 100222002227. The reversal of 100222002221 is 122200222001.

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 de Polignac number, because none of the positive numbers 2^k-100222002221 is a prime.

It is a super-2 number, since 2×100222002221² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 100222002196 and 100222002205.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (100222002227) 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, 4555545545 + ... + 4555545566.

It is an arithmetic number, because the mean of its divisors is an integer number (27333273336).

Almost surely, 2^100222002221 is an apocalyptic number.

100222002221 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

100222002221 is a deficient number, since it is larger than the sum of its proper divisors (9111091123).

100222002221 is an equidigital number, since it uses as much as digits as its factorization.

100222002221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9111091122.

The product of its (nonzero) digits is 64, while the sum is 14.

Adding to 100222002221 its reverse (122200222001), we get a palindrome (222422224222).

The spelling of 100222002221 in words is "one hundred billion, two hundred twenty-two million, two thousand, two hundred twenty-one".