2172216270 has 64 divisors (see below), whose sum is σ = 5968244736. Its totient is φ = 495659520.

The previous prime is 2172216223. The next prime is 2172216271. The reversal of 2172216270 is 726122712.

2172216270 is digitally balanced in base 2 and base 4, because in such bases it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2172216271) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 118950 + ... + 135990.

It is an arithmetic number, because the mean of its divisors is an integer number (93253824).

Almost surely, 2^2172216270 is an apocalyptic number.

2172216270 is an abundant number, since it is smaller than the sum of its proper divisors (3796028466).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2172216270 is a wasteful number, since it uses less digits than its factorization.

2172216270 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17665.

The product of its (nonzero) digits is 4704, while the sum is 30.

The square root of 2172216270 is about 46607.0409916785. The cubic root of 2172216270 is about 1295.0931930568.

Adding to 2172216270 its reverse (726122712), we get a palindrome (2898338982).

The spelling of 2172216270 in words is "two billion, one hundred seventy-two million, two hundred sixteen thousand, two hundred seventy".