100022222 has 4 divisors (see below), whose sum is σ = 150033336. Its totient is φ = 50011110.

The previous prime is 100022201. The next prime is 100022227. The reversal of 100022222 is 222220001.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 222220001 = 43 ⋅5167907.

100022222 is a modest number, since divided by 22222 gives 1000 as remainder.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (100022227) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25005554 + ... + 25005557.

It is an arithmetic number, because the mean of its divisors is an integer number (37508334).

Almost surely, 2^100022222 is an apocalyptic number.

100022222 is a deficient number, since it is larger than the sum of its proper divisors (50011114).

100022222 is an equidigital number, since it uses as much as digits as its factorization.

100022222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 50011113.

The product of its (nonzero) digits is 32, while the sum is 11.

The square root of 100022222 is about 10001.1110382797. Note that the first 3 decimals coincide. The cubic root of 100022222 is about 464.1932626105.

Adding to 100022222 its reverse (222220001), we get a palindrome (322242223).

The spelling of 100022222 in words is "one hundred million, twenty-two thousand, two hundred twenty-two".