13112022311021 has 4 divisors (see below), whose sum is σ = 13166429042844. Its totient is φ = 13057615579200.

The previous prime is 13112022310997. The next prime is 13112022311039. The reversal of 13112022311021 is 12011322021131.

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

It can be written as a sum of positive squares in 2 ways, for example, as 9274004355625 + 3838017955396 = 3045325^2 + 1959086^2 .

It is a cyclic number.

It is not a de Polignac number, because 13112022311021 - 2⁶ = 13112022310957 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 13112022310984 and 13112022311002.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13112022341021) 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, 27203365550 + ... + 27203366031.

It is an arithmetic number, because the mean of its divisors is an integer number (3291607260711).

Almost surely, 2^{13112022311021} is an apocalyptic number.

It is an amenable number.

13112022311021 is a deficient number, since it is larger than the sum of its proper divisors (54406731823).

13112022311021 is an equidigital number, since it uses as much as digits as its factorization.

13112022311021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 54406731822.

The product of its (nonzero) digits is 144, while the sum is 20.

Adding to 13112022311021 its reverse (12011322021131), we get a palindrome (25123344332152).

The spelling of 13112022311021 in words is "thirteen trillion, one hundred twelve billion, twenty-two million, three hundred eleven thousand, twenty-one".