11253412552221 has 24 divisors (see below), whose sum is σ = 18584226573120. Its totient is φ = 6428041410816.

The previous prime is 11253412552177. The next prime is 11253412552241. The reversal of 11253412552221 is 12225521435211.

11253412552221 is a `hidden beast` number, since 1 + 1 + 2 + 5 + 3 + 4 + 125 + 522 + 2 + 1 = 666.

It is not a de Polignac number, because 11253412552221 - 2⁹ = 11253412551709 is a prime.

It is a super-2 number, since 2×11253412552221² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11253412552241) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 34280451 + ... + 34607168.

It is an arithmetic number, because the mean of its divisors is an integer number (774342773880).

Almost surely, 2^{11253412552221} is an apocalyptic number.

It is an amenable number.

11253412552221 is a deficient number, since it is larger than the sum of its proper divisors (7330814020899).

11253412552221 is a wasteful number, since it uses less digits than its factorization.

11253412552221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 68890225 (or 68890222 counting only the distinct ones).

The product of its digits is 48000, while the sum is 36.

Adding to 11253412552221 its reverse (12225521435211), we get a palindrome (23478933987432).

The spelling of 11253412552221 in words is "eleven trillion, two hundred fifty-three billion, four hundred twelve million, five hundred fifty-two thousand, two hundred twenty-one".