1000022123 has 4 divisors (see below), whose sum is σ = 1000095480.
Its totient is φ = 999948768.
The previous prime is 1000022081. The next prime is 1000022173. The reversal of 1000022123 is 3212200001.
It is a happy number.
It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.
It is a cyclic number.
It is not a de Polignac number, because 1000022123 - 218 = 999759979 is a prime.
It is a Duffinian number.
It is not an unprimeable number, because it can be changed into a prime (1000022173) 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, 9533 + ... + 45726.
It is an arithmetic number, because the mean of its divisors is an integer number (250023870).
Almost surely, 21000022123 is an apocalyptic number.
1000022123 is a deficient number, since it is larger than the sum of its proper divisors (73357).
1000022123 is an equidigital number, since it uses as much as digits as its factorization.
1000022123 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 73356.
The product of its (nonzero) digits is 24, while the sum is 11.
The square root of 1000022123 is about 31623.1263950926.
The cubic root of 1000022123 is about 1000.0073742790.
Adding to 1000022123 its reverse (3212200001), we get a palindrome (4212222124).
It can be divided in two parts, 10000 and 22123, that added together give a palindrome (32123).
The spelling of 1000022123 in words is "one billion, twenty-two thousand, one hundred twenty-three".