2221202501 has 4 divisors (see below), whose sum is σ = 2538517152. Its totient is φ = 1903887852.

The previous prime is 2221202479. The next prime is 2221202513. The reversal of 2221202501 is 1052021222.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2221202501 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 2221202501.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2221202701) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 158657315 + ... + 158657328.

It is an arithmetic number, because the mean of its divisors is an integer number (634629288).

Almost surely, 2^2221202501 is an apocalyptic number.

It is an amenable number.

2221202501 is a deficient number, since it is larger than the sum of its proper divisors (317314651).

2221202501 is an equidigital number, since it uses as much as digits as its factorization.

2221202501 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 317314650.

The product of its (nonzero) digits is 160, while the sum is 17.

The square root of 2221202501 is about 47129.6350611799. The cubic root of 2221202501 is about 1304.7562461700.

Adding to 2221202501 its reverse (1052021222), we get a palindrome (3273223723).

The spelling of 2221202501 in words is "two billion, two hundred twenty-one million, two hundred two thousand, five hundred one".