1001123219 has 2 divisors, whose sum is σ = 1001123220. Its totient is φ = 1001123218.

The previous prime is 1001123213. The next prime is 1001123261. The reversal of 1001123219 is 9123211001.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1001123219 - 2⁴ = 1001123203 is a prime.

It is a super-2 number, since 2×1001123219² = 2004495399241843922, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1001123219.

It is not a weakly prime, because it can be changed into another prime (1001123213) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 500561609 + 500561610.

It is an arithmetic number, because the mean of its divisors is an integer number (500561610).

Almost surely, 2^1001123219 is an apocalyptic number.

1001123219 is a deficient number, since it is larger than the sum of its proper divisors (1).

1001123219 is an equidigital number, since it uses as much as digits as its factorization.

1001123219 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 108, while the sum is 20.

The square root of 1001123219 is about 31640.5312692439. The cubic root of 1001123219 is about 1000.3742662406.

The spelling of 1001123219 in words is "one billion, one million, one hundred twenty-three thousand, two hundred nineteen".