2220204501 has 6 divisors (see below), whose sum is σ = 3206962070. Its totient is φ = 1480136328.

The previous prime is 2220204487. The next prime is 2220204521. The reversal of 2220204501 is 1054020222.

It can be written as a sum of positive squares in only one way, i.e., 1812204900 + 407999601 = 42570^2 + 20199^2 .

It is not a de Polignac number, because 2220204501 - 2¹⁸ = 2219942357 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2220204521) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 123344686 + ... + 123344703.

Almost surely, 2^2220204501 is an apocalyptic number.

It is an amenable number.

2220204501 is a deficient number, since it is larger than the sum of its proper divisors (986757569).

2220204501 is a wasteful number, since it uses less digits than its factorization.

2220204501 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 246689395 (or 246689392 counting only the distinct ones).

The product of its (nonzero) digits is 320, while the sum is 18.

The square root of 2220204501 is about 47119.0460535864. The cubic root of 2220204501 is about 1304.5608052167.

Adding to 2220204501 its reverse (1054020222), we get a palindrome (3274224723).

The spelling of 2220204501 in words is "two billion, two hundred twenty million, two hundred four thousand, five hundred one".