2171072722250 has 48 divisors (see below), whose sum is σ = 4134302906760. Its totient is φ = 853709609600.

The previous prime is 2171072722199. The next prime is 2171072722303. The reversal of 2171072722250 is 522272701712.

It can be written as a sum of positive squares in 4 ways, for example, as 90292437169 + 2080780285081 = 300487^2 + 1442491^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 377135 + ... + 2117634.

Almost surely, 2^{2171072722250} is an apocalyptic number.

2171072722250 is a deficient number, since it is larger than the sum of its proper divisors (1963230184510).

2171072722250 is an equidigital number, since it uses as much as digits as its factorization.

2171072722250 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2494904 (or 2494835 counting only the distinct ones).

The product of its (nonzero) digits is 54880, while the sum is 38.

The spelling of 2171072722250 in words is "two trillion, one hundred seventy-one billion, seventy-two million, seven hundred twenty-two thousand, two hundred fifty".