2131060221 has 12 divisors (see below), whose sum is σ = 3109933372. Its totient is φ = 1406059776.

The previous prime is 2131060213. The next prime is 2131060231. The reversal of 2131060221 is 1220601312.

It can be written as a sum of positive squares in 2 ways, for example, as 1710236025 + 420824196 = 41355^2 + 20514^2 .

It is not a de Polignac number, because 2131060221 - 2³ = 2131060213 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2131060194 and 2131060203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2131060231) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1219666 + ... + 1221411.

Almost surely, 2^2131060221 is an apocalyptic number.

It is an amenable number.

2131060221 is a deficient number, since it is larger than the sum of its proper divisors (978873151).

2131060221 is a wasteful number, since it uses less digits than its factorization.

2131060221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2441180 (or 2441177 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 18.

The square root of 2131060221 is about 46163.4078139818. The cubic root of 2131060221 is about 1286.8617949372.

Adding to 2131060221 its reverse (1220601312), we get a palindrome (3351661533).

The spelling of 2131060221 in words is "two billion, one hundred thirty-one million, sixty thousand, two hundred twenty-one".