11450016231221 has 4 divisors (see below), whose sum is σ = 11450045235744. Its totient is φ = 11449987226700.

The previous prime is 11450016231209. The next prime is 11450016231229. The reversal of 11450016231221 is 12213261005411.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 11450016231221 - 2¹⁰ = 11450016230197 is a prime.

It is a super-2 number, since 2×11450016231221² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11450016231229) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13901825 + ... + 14702406.

It is an arithmetic number, because the mean of its divisors is an integer number (2862511308936).

Almost surely, 2^{11450016231221} is an apocalyptic number.

It is an amenable number.

11450016231221 is a deficient number, since it is larger than the sum of its proper divisors (29004523).

11450016231221 is an equidigital number, since it uses as much as digits as its factorization.

11450016231221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29004522.

The product of its (nonzero) digits is 2880, while the sum is 29.

Adding to 11450016231221 its reverse (12213261005411), we get a palindrome (23663277236632).

The spelling of 11450016231221 in words is "eleven trillion, four hundred fifty billion, sixteen million, two hundred thirty-one thousand, two hundred twenty-one".