1122222001 has 8 divisors (see below), whose sum is σ = 1139987520. Its totient is φ = 1104557712.

The previous prime is 1122221987. The next prime is 1122222007. The reversal of 1122222001 is 1002222211.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1122222001 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1122222007) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2805 + ... + 47458.

It is an arithmetic number, because the mean of its divisors is an integer number (142498440).

Almost surely, 2^1122222001 is an apocalyptic number.

It is an amenable number.

1122222001 is a deficient number, since it is larger than the sum of its proper divisors (17765519).

1122222001 is an equidigital number, since it uses as much as digits as its factorization.

1122222001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 50615.

The product of its (nonzero) digits is 32, while the sum is 13.

The square root of 1122222001 is about 33499.5821018711. The cubic root of 1122222001 is about 1039.1851361722.

Adding to 1122222001 its reverse (1002222211), we get a palindrome (2124444212).

The spelling of 1122222001 in words is "one billion, one hundred twenty-two million, two hundred twenty-two thousand, one".