1320155012 has 48 divisors (see below), whose sum is σ = 2651854464. Its totient is φ = 573927200.

The previous prime is 1320154999. The next prime is 1320155041. The reversal of 1320155012 is 2105510231.

It is a happy 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 15 ways as a sum of consecutive naturals, for example, 117062 + ... + 127842.

It is an arithmetic number, because the mean of its divisors is an integer number (55246968).

Almost surely, 2^1320155012 is an apocalyptic number.

It is an amenable number.

1320155012 is an abundant number, since it is smaller than the sum of its proper divisors (1331699452).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1320155012 is a wasteful number, since it uses less digits than its factorization.

1320155012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10841 (or 10817 counting only the distinct ones).

The product of its (nonzero) digits is 300, while the sum is 20.

The square root of 1320155012 is about 36333.9374689835. The cubic root of 1320155012 is about 1097.0042487468.

Adding to 1320155012 its reverse (2105510231), we get a palindrome (3425665243).

The spelling of 1320155012 in words is "one billion, three hundred twenty million, one hundred fifty-five thousand, twelve".