2245522213221 has 32 divisors (see below), whose sum is σ = 3486143539200. Its totient is φ = 1259107692480.

The previous prime is 2245522213189. The next prime is 2245522213223. The reversal of 2245522213221 is 1223122255422.

It is not a de Polignac number, because 2245522213221 - 2⁵ = 2245522213189 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2245522213223) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1555081 + ... + 2628558.

It is an arithmetic number, because the mean of its divisors is an integer number (108941985600).

Almost surely, 2^{2245522213221} is an apocalyptic number.

2245522213221 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

2245522213221 is a deficient number, since it is larger than the sum of its proper divisors (1240621325979).

2245522213221 is a wasteful number, since it uses less digits than its factorization.

2245522213221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4184129.

The product of its digits is 38400, while the sum is 33.

Adding to 2245522213221 its reverse (1223122255422), we get a palindrome (3468644468643).

The spelling of 2245522213221 in words is "two trillion, two hundred forty-five billion, five hundred twenty-two million, two hundred thirteen thousand, two hundred twenty-one".