2221310050225 has 24 divisors (see below), whose sum is σ = 3313593343040. Its totient is φ = 1443016451520.

The previous prime is 2221310050133. The next prime is 2221310050273. The reversal of 2221310050225 is 5220500131222.

It is not a de Polignac number, because 2221310050225 - 2³³ = 2212720115633 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (25).

It is a self number, because there is not a number n which added to its sum of digits gives 2221310050225.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 334028262 + ... + 334034911.

Almost surely, 2^{2221310050225} is an apocalyptic number.

2221310050225 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

2221310050225 is a deficient number, since it is larger than the sum of its proper divisors (1092283292815).

2221310050225 is a wasteful number, since it uses less digits than its factorization.

2221310050225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 668063209 (or 668063204 counting only the distinct ones).

The product of its (nonzero) digits is 2400, while the sum is 25.

Adding to 2221310050225 its reverse (5220500131222), we get a palindrome (7441810181447).

The spelling of 2221310050225 in words is "two trillion, two hundred twenty-one billion, three hundred ten million, fifty thousand, two hundred twenty-five".