11321302312221 has 16 divisors (see below), whose sum is σ = 16468076331840. Its totient is φ = 6861092209920.

The previous prime is 11321302312193. The next prime is 11321302312241. The reversal of 11321302312221 is 12221320312311.

It is not a de Polignac number, because 11321302312221 - 2⁷ = 11321302312093 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 11321302312191 and 11321302312200.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11321302312241) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6818860 + ... + 8315013.

It is an arithmetic number, because the mean of its divisors is an integer number (1029254770740).

Almost surely, 2^{11321302312221} is an apocalyptic number.

11321302312221 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

11321302312221 is a deficient number, since it is larger than the sum of its proper divisors (5146774019619).

11321302312221 is a wasteful number, since it uses less digits than its factorization.

11321302312221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15156556.

The product of its (nonzero) digits is 864, while the sum is 24.

Adding to 11321302312221 its reverse (12221320312311), we get a palindrome (23542622624532).

The spelling of 11321302312221 in words is "eleven trillion, three hundred twenty-one billion, three hundred two million, three hundred twelve thousand, two hundred twenty-one".