13123122223131 has 6 divisors (see below), whose sum is σ = 18955620988980. Its totient is φ = 8748748148748.

The previous prime is 13123122223129. The next prime is 13123122223147. The reversal of 13123122223131 is 13132222132131.

13123122223131 is a `hidden beast` number, since 1 + 3 + 12 + 312 + 2 + 22 + 313 + 1 = 666.

It is not a de Polignac number, because 13123122223131 - 2¹ = 13123122223129 is a prime.

It is a super-2 number, since 2×13123122223131² (a number of 27 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 13123122223095 and 13123122223104.

It is not an unprimeable number, because it can be changed into a prime (13123122223031) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 729062345721 + ... + 729062345738.

It is an arithmetic number, because the mean of its divisors is an integer number (3159270164830).

Almost surely, 2^{13123122223131} is an apocalyptic number.

13123122223131 is a deficient number, since it is larger than the sum of its proper divisors (5832498765849).

13123122223131 is a wasteful number, since it uses less digits than its factorization.

13123122223131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1458124691465 (or 1458124691462 counting only the distinct ones).

The product of its digits is 2592, while the sum is 27.

Adding to 13123122223131 its reverse (13132222132131), we get a palindrome (26255344355262).

The spelling of 13123122223131 in words is "thirteen trillion, one hundred twenty-three billion, one hundred twenty-two million, two hundred twenty-three thousand, one hundred thirty-one".