13122111020331 has 4 divisors (see below), whose sum is σ = 17496148027112. Its totient is φ = 8748074013552.

The previous prime is 13122111020309. The next prime is 13122111020357. The reversal of 13122111020331 is 13302011122131.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 13122111020331 - 2⁷ = 13122111020203 is a prime.

It is a super-2 number, since 2×13122111020331² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 13122111020298 and 13122111020307.

It is not an unprimeable number, because it can be changed into a prime (13122111028331) 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, 2187018503386 + ... + 2187018503391.

It is an arithmetic number, because the mean of its divisors is an integer number (4374037006778).

Almost surely, 2^{13122111020331} is an apocalyptic number.

13122111020331 is a deficient number, since it is larger than the sum of its proper divisors (4374037006781).

13122111020331 is an equidigital number, since it uses as much as digits as its factorization.

13122111020331 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4374037006780.

The product of its (nonzero) digits is 216, while the sum is 21.

Adding to 13122111020331 its reverse (13302011122131), we get a palindrome (26424122142462).

The spelling of 13122111020331 in words is "thirteen trillion, one hundred twenty-two billion, one hundred eleven million, twenty thousand, three hundred thirty-one".