3601210121 has 8 divisors (see below), whose sum is σ = 3611613960. Its totient is φ = 3590820352.

The previous prime is 3601210097. The next prime is 3601210127. The reversal of 3601210121 is 1210121063.

It can be written as a sum of positive squares in 4 ways, for example, as 2440854025 + 1160356096 = 49405^2 + 34064^2 .

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 3601210121 - 2¹⁰ = 3601209097 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 3601210121.

It is not an unprimeable number, because it can be changed into a prime (3601210127) 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, 696281 + ... + 701433.

It is an arithmetic number, because the mean of its divisors is an integer number (451451745).

Almost surely, 2^3601210121 is an apocalyptic number.

It is an amenable number.

3601210121 is a deficient number, since it is larger than the sum of its proper divisors (10403839).

3601210121 is a wasteful number, since it uses less digits than its factorization.

3601210121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7035.

The product of its (nonzero) digits is 72, while the sum is 17.

The square root of 3601210121 is about 60010.0834943595. The cubic root of 3601210121 is about 1532.7905727965.

Adding to 3601210121 its reverse (1210121063), we get a palindrome (4811331184).

The spelling of 3601210121 in words is "three billion, six hundred one million, two hundred ten thousand, one hundred twenty-one".