2171268026 has 4 divisors (see below), whose sum is σ = 3256902042. Its totient is φ = 1085634012.

The previous prime is 2171268023. The next prime is 2171268061. The reversal of 2171268026 is 6208621712.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 2020592401 + 150675625 = 44951^2 + 12275^2 .

It is not an unprimeable number, because it can be changed into a prime (2171268023) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 542817005 + ... + 542817008.

Almost surely, 2^2171268026 is an apocalyptic number.

2171268026 is a deficient number, since it is larger than the sum of its proper divisors (1085634016).

2171268026 is a wasteful number, since it uses less digits than its factorization.

2171268026 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1085634015.

The product of its (nonzero) digits is 16128, while the sum is 35.

The square root of 2171268026 is about 46596.8671264496. The cubic root of 2171268026 is about 1294.9047153398.

Adding to 2171268026 its reverse (6208621712), we get a palindrome (8379889738).

The spelling of 2171268026 in words is "two billion, one hundred seventy-one million, two hundred sixty-eight thousand, twenty-six".