13101220111031 has 16 divisors (see below), whose sum is σ = 14778420281856. Its totient is φ = 11523649010016.

The previous prime is 13101220111013. The next prime is 13101220111033. The reversal of 13101220111031 is 13011102210131.

It is a de Polignac number, because none of the positive numbers 2^k-13101220111031 is a prime.

It is a super-2 number, since 2×13101220111031² (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 (13101220111033) 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, 83223245 + ... + 83380518.

It is an arithmetic number, because the mean of its divisors is an integer number (923651267616).

Almost surely, 2^{13101220111031} is an apocalyptic number.

13101220111031 is a deficient number, since it is larger than the sum of its proper divisors (1677200170825).

13101220111031 is a wasteful number, since it uses less digits than its factorization.

13101220111031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 166604062.

The product of its (nonzero) digits is 36, while the sum is 17.

Adding to 13101220111031 its reverse (13011102210131), we get a palindrome (26112322321162).

The spelling of 13101220111031 in words is "thirteen trillion, one hundred one billion, two hundred twenty million, one hundred eleven thousand, thirty-one".