1201601205 has 24 divisors (see below), whose sum is σ = 2380315392. Its totient is φ = 549303264.

The previous prime is 1201601171. The next prime is 1201601221. The reversal of 1201601205 is 5021061021.

It is not a de Polignac number, because 1201601205 - 2⁸ = 1201600949 is a prime.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1906989 + ... + 1907618.

It is an arithmetic number, because the mean of its divisors is an integer number (99179808).

Almost surely, 2^1201601205 is an apocalyptic number.

1201601205 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1201601205 is a deficient number, since it is larger than the sum of its proper divisors (1178714187).

1201601205 is a wasteful number, since it uses less digits than its factorization.

1201601205 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3814625 (or 3814622 counting only the distinct ones).

The product of its (nonzero) digits is 120, while the sum is 18.

The square root of 1201601205 is about 34664.1198503582. The cubic root of 1201601205 is about 1063.1310075070.

Adding to 1201601205 its reverse (5021061021), we get a palindrome (6222662226).

The spelling of 1201601205 in words is "one billion, two hundred one million, six hundred one thousand, two hundred five".