13110220311021 has 30 divisors (see below), whose sum is σ = 20283014576682. Its totient is φ = 8438762455200.

The previous prime is 13110220311011. The next prime is 13110220311029. The reversal of 13110220311021 is 12011302201131.

13110220311021 is a `hidden beast` number, since 1 + 3 + 110 + 220 + 311 + 0 + 21 = 666.

It can be written as a sum of positive squares in 3 ways, for example, as 134274609225 + 12975945701796 = 366435^2 + 3602214^2 .

It is not a de Polignac number, because 13110220311021 - 2⁷ = 13110220310893 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 13110220310985 and 13110220311003.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13110220311029) by changing a digit.

It is a polite number, since it can be written in 29 ways as a sum of consecutive naturals, for example, 96159330 + ... + 96295571.

Almost surely, 2^{13110220311021} is an apocalyptic number.

It is an amenable number.

13110220311021 is a deficient number, since it is larger than the sum of its proper divisors (7172794265661).

13110220311021 is an equidigital number, since it uses as much as digits as its factorization.

13110220311021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 192454971 (or 192454933 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 18.

Adding to 13110220311021 its reverse (12011302201131), we get a palindrome (25121522512152).

The spelling of 13110220311021 in words is "thirteen trillion, one hundred ten billion, two hundred twenty million, three hundred eleven thousand, twenty-one".