2172000220 has 24 divisors (see below), whose sum is σ = 4912062624. Its totient is φ = 801969216.

The previous prime is 2172000179. The next prime is 2172000247. The reversal of 2172000220 is 220002712.

2172000220 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 2172000194 and 2172000203.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4176664 + ... + 4177183.

It is an arithmetic number, because the mean of its divisors is an integer number (204669276).

Almost surely, 2^2172000220 is an apocalyptic number.

2172000220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2172000220 is an abundant number, since it is smaller than the sum of its proper divisors (2740062404).

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

2172000220 is a wasteful number, since it uses less digits than its factorization.

2172000220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8353869 (or 8353867 counting only the distinct ones).

The product of its (nonzero) digits is 112, while the sum is 16.

The square root of 2172000220 is about 46604.7231512000. The cubic root of 2172000220 is about 1295.0502547046.

Adding to 2172000220 its reverse (220002712), we get a palindrome (2392002932).

The spelling of 2172000220 in words is "two billion, one hundred seventy-two million, two hundred twenty", and thus it is an aban number.