11220131423205 has 24 divisors (see below), whose sum is σ = 19470763473408. Its totient is φ = 5977136039136.

The previous prime is 11220131423129. The next prime is 11220131423227. The reversal of 11220131423205 is 50232413102211.

It is a happy number.

11220131423205 is a `hidden beast` number, since 1 + 1 + 2 + 2 + 0 + 1 + 31 + 423 + 205 = 666.

It is not a de Polignac number, because 11220131423205 - 2¹² = 11220131419109 is a prime.

It is a super-3 number, since 3×11220131423205³ (a number of 40 digits) contains 333 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 144420177 + ... + 144497846.

It is an arithmetic number, because the mean of its divisors is an integer number (811281811392).

Almost surely, 2^{11220131423205} is an apocalyptic number.

11220131423205 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

11220131423205 is a deficient number, since it is larger than the sum of its proper divisors (8250632050203).

11220131423205 is a wasteful number, since it uses less digits than its factorization.

11220131423205 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 288918897 (or 288918894 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 27.

Adding to 11220131423205 its reverse (50232413102211), we get a palindrome (61452544525416).

The spelling of 11220131423205 in words is "eleven trillion, two hundred twenty billion, one hundred thirty-one million, four hundred twenty-three thousand, two hundred five".