2171126141 has 2 divisors, whose sum is σ = 2171126142. Its totient is φ = 2171126140.

The previous prime is 2171126129. The next prime is 2171126171. The reversal of 2171126141 is 1416211712.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1158040900 + 1013085241 = 34030^2 + 31829^2 .

It is a cyclic number.

It is not a de Polignac number, because 2171126141 - 2⁶ = 2171126077 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 2171126141.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2171126171) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1085563070 + 1085563071.

It is an arithmetic number, because the mean of its divisors is an integer number (1085563071).

Almost surely, 2^2171126141 is an apocalyptic number.

It is an amenable number.

2171126141 is a deficient number, since it is larger than the sum of its proper divisors (1).

2171126141 is an equidigital number, since it uses as much as digits as its factorization.

2171126141 is an evil number, because the sum of its binary digits is even.

The product of its digits is 672, while the sum is 26.

The square root of 2171126141 is about 46595.3446279776. The cubic root of 2171126141 is about 1294.8765088486.

Adding to 2171126141 its reverse (1416211712), we get a palindrome (3587337853).

The spelling of 2171126141 in words is "two billion, one hundred seventy-one million, one hundred twenty-six thousand, one hundred forty-one".