2197559220 has 24 divisors (see below), whose sum is σ = 6153165984. Its totient is φ = 586015776.

The previous prime is 2197559207. The next prime is 2197559227. The reversal of 2197559220 is 229557912.

2197559220 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2197559227) 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, 18312934 + ... + 18313053.

It is an arithmetic number, because the mean of its divisors is an integer number (256381916).

Almost surely, 2^2197559220 is an apocalyptic number.

2197559220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2197559220 is an abundant number, since it is smaller than the sum of its proper divisors (3955606764).

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

2197559220 is a wasteful number, since it uses less digits than its factorization.

2197559220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36625999 (or 36625997 counting only the distinct ones).

The product of its (nonzero) digits is 113400, while the sum is 42.

The square root of 2197559220 is about 46878.1315753945. The cubic root of 2197559220 is about 1300.1102904456.

The spelling of 2197559220 in words is "two billion, one hundred ninety-seven million, five hundred fifty-nine thousand, two hundred twenty".