3201120561 has 8 divisors (see below), whose sum is σ = 4268562624. Its totient is φ = 2133879440.

The previous prime is 3201120467. The next prime is 3201120617. The reversal of 3201120561 is 1650211023.

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

It is a cyclic number.

It is not a de Polignac number, because 3201120561 - 2¹⁵ = 3201087793 is a prime.

It is not an unprimeable number, because it can be changed into a prime (3201120661) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7986 + ... + 80411.

It is an arithmetic number, because the mean of its divisors is an integer number (533570328).

Almost surely, 2^3201120561 is an apocalyptic number.

It is an amenable number.

3201120561 is a deficient number, since it is larger than the sum of its proper divisors (1067442063).

3201120561 is a wasteful number, since it uses less digits than its factorization.

3201120561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 100471.

The product of its (nonzero) digits is 360, while the sum is 21.

The square root of 3201120561 is about 56578.4460815247. The cubic root of 3201120561 is about 1473.7845869666.

Adding to 3201120561 its reverse (1650211023), we get a palindrome (4851331584).

The spelling of 3201120561 in words is "three billion, two hundred one million, one hundred twenty thousand, five hundred sixty-one".