1220001122 has 8 divisors (see below), whose sum is σ = 1831509036. Its totient is φ = 609498112.

The previous prime is 1220001109. The next prime is 1220001131. The reversal of 1220001122 is 2211000221.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 1213895281 + 6105841 = 34841^2 + 2471^2 .

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

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 248183 + ... + 253050.

Almost surely, 2^1220001122 is an apocalyptic number.

1220001122 is a deficient number, since it is larger than the sum of its proper divisors (611507914).

1220001122 is a wasteful number, since it uses less digits than its factorization.

1220001122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 502452.

The product of its (nonzero) digits is 16, while the sum is 11.

The square root of 1220001122 is about 34928.5144545255. The cubic root of 1220001122 is about 1068.5300577144.

Adding to 1220001122 its reverse (2211000221), we get a palindrome (3431001343).

Subtracting 1220001122 from its reverse (2211000221), we obtain a palindrome (990999099).

The spelling of 1220001122 in words is "one billion, two hundred twenty million, one thousand, one hundred twenty-two".