100222111 has 4 divisors (see below), whose sum is σ = 109333224. Its totient is φ = 91111000.

The previous prime is 100222103. The next prime is 100222117. The reversal of 100222111 is 111222001.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 111222001 = 11 ⋅10111091.

It is a cyclic number.

It is not a de Polignac number, because 100222111 - 2³ = 100222103 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (100222117) 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, 4555540 + ... + 4555561.

It is an arithmetic number, because the mean of its divisors is an integer number (27333306).

Almost surely, 2^100222111 is an apocalyptic number.

100222111 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

100222111 is a deficient number, since it is larger than the sum of its proper divisors (9111113).

100222111 is an equidigital number, since it uses as much as digits as its factorization.

100222111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9111112.

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

The square root of 100222111 is about 10011.0993901769. The cubic root of 100222111 is about 464.5022785596.

Adding to 100222111 its reverse (111222001), we get a palindrome (211444112).

The spelling of 100222111 in words is "one hundred million, two hundred twenty-two thousand, one hundred eleven".