2171268061 has 2 divisors, whose sum is σ = 2171268062. Its totient is φ = 2171268060.

The previous prime is 2171268023. The next prime is 2171268083. The reversal of 2171268061 is 1608621712.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1449324900 + 721943161 = 38070^2 + 26869^2 .

It is a cyclic number.

It is not a de Polignac number, because 2171268061 - 2³¹ = 23784413 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2171268091) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1085634030 + 1085634031.

It is an arithmetic number, because the mean of its divisors is an integer number (1085634031).

Almost surely, 2^2171268061 is an apocalyptic number.

It is an amenable number.

2171268061 is a deficient number, since it is larger than the sum of its proper divisors (1).

2171268061 is an equidigital number, since it uses as much as digits as its factorization.

2171268061 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 8064, while the sum is 34.

The square root of 2171268061 is about 46596.8675020113. The cubic root of 2171268061 is about 1294.9047222976.

Adding to 2171268061 its reverse (1608621712), we get a palindrome (3779889773).

The spelling of 2171268061 in words is "two billion, one hundred seventy-one million, two hundred sixty-eight thousand, sixty-one".