1201232665 has 32 divisors (see below), whose sum is σ = 1547859456. Its totient is φ = 891770880.

The previous prime is 1201232629. The next prime is 1201232717. The reversal of 1201232665 is 5662321021.

It is not a de Polignac number, because 1201232665 - 2¹¹ = 1201230617 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2594224 + ... + 2594686.

It is an arithmetic number, because the mean of its divisors is an integer number (48370608).

Almost surely, 2^1201232665 is an apocalyptic number.

It is an amenable number.

1201232665 is a deficient number, since it is larger than the sum of its proper divisors (346626791).

1201232665 is a wasteful number, since it uses less digits than its factorization.

1201232665 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 849.

The product of its (nonzero) digits is 4320, while the sum is 28.

The square root of 1201232665 is about 34658.8035713872. The cubic root of 1201232665 is about 1063.0223063386.

Adding to 1201232665 its reverse (5662321021), we get a palindrome (6863553686).

The spelling of 1201232665 in words is "one billion, two hundred one million, two hundred thirty-two thousand, six hundred sixty-five".