2221323125 has 30 divisors (see below), whose sum is σ = 3228996078. Its totient is φ = 1523172000.

The previous prime is 2221323119. The next prime is 2221323149. The reversal of 2221323125 is 5213231222.

2221323125 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 5 ways, for example, as 512162161 + 1709160964 = 22631^2 + 41342^2 .

It is not a de Polignac number, because 2221323125 - 2¹⁶ = 2221257589 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 2221323125.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 29 ways as a sum of consecutive naturals, for example, 5642 + ... + 66891.

Almost surely, 2^2221323125 is an apocalyptic number.

2221323125 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

2221323125 is a deficient number, since it is larger than the sum of its proper divisors (1007672953).

2221323125 is an frugal number, since it uses more digits than its factorization.

2221323125 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 72567 (or 72545 counting only the distinct ones).

The product of its digits is 1440, while the sum is 23.

The square root of 2221323125 is about 47130.9147481778. The cubic root of 2221323125 is about 1304.7798643181.

Adding to 2221323125 its reverse (5213231222), we get a palindrome (7434554347).

The spelling of 2221323125 in words is "two billion, two hundred twenty-one million, three hundred twenty-three thousand, one hundred twenty-five".