100222771 has 4 divisors (see below), whose sum is σ = 109333944. Its totient is φ = 91111600.

The previous prime is 100222763. The next prime is 100222807. The reversal of 100222771 is 177222001.

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 100222771 - 2³ = 100222763 is a prime.

It is a Smith number, since the sum of its digits (22) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (100222711) 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, 4555570 + ... + 4555591.

It is an arithmetic number, because the mean of its divisors is an integer number (27333486).

Almost surely, 2^100222771 is an apocalyptic number.

100222771 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

100222771 is a deficient number, since it is larger than the sum of its proper divisors (9111173).

100222771 is an equidigital number, since it uses as much as digits as its factorization.

100222771 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9111172.

The product of its (nonzero) digits is 392, while the sum is 22.

The square root of 100222771 is about 10011.1323535352. The cubic root of 100222771 is about 464.5032981976.

Adding to 100222771 its reverse (177222001), we get a palindrome (277444772).

The spelling of 100222771 in words is "one hundred million, two hundred twenty-two thousand, seven hundred seventy-one".