1200220135 has 8 divisors (see below), whose sum is σ = 1440450576. Its totient is φ = 960051840.

The previous prime is 1200220081. The next prime is 1200220157. The reversal of 1200220135 is 5310220021.

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

It is not a de Polignac number, because 1200220135 - 2⁹ = 1200219623 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 63727 + ... + 80383.

It is an arithmetic number, because the mean of its divisors is an integer number (180056322).

Almost surely, 2^1200220135 is an apocalyptic number.

1200220135 is a deficient number, since it is larger than the sum of its proper divisors (240230441).

1200220135 is a wasteful number, since it uses less digits than its factorization.

1200220135 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31073.

The product of its (nonzero) digits is 120, while the sum is 16.

The square root of 1200220135 is about 34644.1933807096. The cubic root of 1200220135 is about 1062.7235453052.

Adding to 1200220135 its reverse (5310220021), we get a palindrome (6510440156).

The spelling of 1200220135 in words is "one billion, two hundred million, two hundred twenty thousand, one hundred thirty-five".