2141723321 has 2 divisors, whose sum is σ = 2141723322. Its totient is φ = 2141723320.

The previous prime is 2141723303. The next prime is 2141723347. The reversal of 2141723321 is 1233271412.

It is an a-pointer prime, because the next prime (2141723347) can be obtained adding 2141723321 to its sum of digits (26).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1334879296 + 806844025 = 36536^2 + 28405^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2141723321 is a prime.

It is not a weakly prime, because it can be changed into another prime (2141723621) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1070861660 + 1070861661.

It is an arithmetic number, because the mean of its divisors is an integer number (1070861661).

Almost surely, 2^2141723321 is an apocalyptic number.

It is an amenable number.

2141723321 is a deficient number, since it is larger than the sum of its proper divisors (1).

2141723321 is an equidigital number, since it uses as much as digits as its factorization.

2141723321 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2016, while the sum is 26.

The square root of 2141723321 is about 46278.7566924610. The cubic root of 2141723321 is about 1289.0045644763.

Adding to 2141723321 its reverse (1233271412), we get a palindrome (3374994733).

The spelling of 2141723321 in words is "two billion, one hundred forty-one million, seven hundred twenty-three thousand, three hundred twenty-one".