1201565612 has 24 divisors (see below), whose sum is σ = 2284539936. Its totient is φ = 549658368.

The previous prime is 1201565591. The next prime is 1201565663. The reversal of 1201565612 is 2165651021.

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 7 ways as a sum of consecutive naturals, for example, 96368 + ... + 108119.

It is an arithmetic number, because the mean of its divisors is an integer number (95189164).

Almost surely, 2^1201565612 is an apocalyptic number.

It is an amenable number.

1201565612 is a deficient number, since it is larger than the sum of its proper divisors (1082974324).

1201565612 is a wasteful number, since it uses less digits than its factorization.

1201565612 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 204617 (or 204615 counting only the distinct ones).

The product of its (nonzero) digits is 3600, while the sum is 29.

The square root of 1201565612 is about 34663.6064482621. The cubic root of 1201565612 is about 1063.1205102928.

The spelling of 1201565612 in words is "one billion, two hundred one million, five hundred sixty-five thousand, six hundred twelve".