1200012122 has 4 divisors (see below), whose sum is σ = 1800018186. Its totient is φ = 600006060.

The previous prime is 1200012101. The next prime is 1200012173. The reversal of 1200012122 is 2212100021.

It is a happy number.

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., 1133736241 + 66275881 = 33671^2 + 8141^2 .

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 as a sum of consecutive naturals, namely, 300003029 + ... + 300003032.

Almost surely, 2^1200012122 is an apocalyptic number.

1200012122 is a deficient number, since it is larger than the sum of its proper divisors (600006064).

1200012122 is an equidigital number, since it uses as much as digits as its factorization.

1200012122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 600006063.

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

The square root of 1200012122 is about 34641.1911169348. The cubic root of 1200012122 is about 1062.6621473781.

Adding to 1200012122 its reverse (2212100021), we get a palindrome (3412112143).

The spelling of 1200012122 in words is "one billion, two hundred million, twelve thousand, one hundred twenty-two".