2171220441 has 8 divisors (see below), whose sum is σ = 3117649920. Its totient is φ = 1336135632.

The previous prime is 2171220391. The next prime is 2171220451. The reversal of 2171220441 is 1440221712.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 2171220441 - 2⁹ = 2171219929 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2171220451) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 27836121 + ... + 27836198.

It is an arithmetic number, because the mean of its divisors is an integer number (389706240).

Almost surely, 2^2171220441 is an apocalyptic number.

It is an amenable number.

2171220441 is a deficient number, since it is larger than the sum of its proper divisors (946429479).

2171220441 is a wasteful number, since it uses less digits than its factorization.

2171220441 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 55672335.

The product of its (nonzero) digits is 896, while the sum is 24.

The square root of 2171220441 is about 46596.3565206551. The cubic root of 2171220441 is about 1294.8952556615.

The spelling of 2171220441 in words is "two billion, one hundred seventy-one million, two hundred twenty thousand, four hundred forty-one".