2235541413221 has 6 divisors (see below), whose sum is σ = 2258825837490. Its totient is φ = 2212494585216.

The previous prime is 2235541413199. The next prime is 2235541413223. The reversal of 2235541413221 is 1223141455322.

It can be written as a sum of positive squares in 3 ways, for example, as 50350872100 + 2185190541121 = 224390^2 + 1478239^2 .

It is a de Polignac number, because none of the positive numbers 2^k-2235541413221 is a prime.

It is a super-2 number, since 2×2235541413221² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2235541413223) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 118788626 + ... + 118807443.

It is an arithmetic number, because the mean of its divisors is an integer number (376470972915).

Almost surely, 2^{2235541413221} is an apocalyptic number.

It is an amenable number.

2235541413221 is a deficient number, since it is larger than the sum of its proper divisors (23284424269).

2235541413221 is an frugal number, since it uses more digits than its factorization.

2235541413221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 237596263 (or 237596166 counting only the distinct ones).

The product of its digits is 57600, while the sum is 35.

Adding to 2235541413221 its reverse (1223141455322), we get a palindrome (3458682868543).

The spelling of 2235541413221 in words is "two trillion, two hundred thirty-five billion, five hundred forty-one million, four hundred thirteen thousand, two hundred twenty-one".