1200011122 has 4 divisors (see below), whose sum is σ = 1800016686. Its totient is φ = 600005560.

The previous prime is 1200011077. The next prime is 1200011123. The reversal of 1200011122 is 2211100021.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 1183291201 + 16719921 = 34399^2 + 4089^2 .

It is a junction number, because it is equal to n+sod(n) for n = 1200011099 and 1200011108.

It is not an unprimeable number, because it can be changed into a prime (1200011123) by changing a digit.

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 as a sum of consecutive naturals, namely, 300002779 + ... + 300002782.

Almost surely, 2^1200011122 is an apocalyptic number.

1200011122 is a deficient number, since it is larger than the sum of its proper divisors (600005564).

1200011122 is an equidigital number, since it uses as much as digits as its factorization.

1200011122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 600005563.

The product of its (nonzero) digits is 8, while the sum is 10.

The square root of 1200011122 is about 34641.1766832479. The cubic root of 1200011122 is about 1062.6618521971.

Adding to 1200011122 its reverse (2211100021), we get a palindrome (3411111143).

The spelling of 1200011122 in words is "one billion, two hundred million, eleven thousand, one hundred twenty-two".