13211002020131 has 4 divisors (see below), whose sum is σ = 13211013400272. Its totient is φ = 13210990639992.

The previous prime is 13211002020121. The next prime is 13211002020197. The reversal of 13211002020131 is 13102020011231.

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

It is a cyclic number.

It is not a de Polignac number, because 13211002020131 - 2²² = 13210997825827 is a prime.

It is a super-2 number, since 2×13211002020131² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13211002020121) 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, 3721796 + ... + 6346161.

It is an arithmetic number, because the mean of its divisors is an integer number (3302753350068).

Almost surely, 2^{13211002020131} is an apocalyptic number.

13211002020131 is a deficient number, since it is larger than the sum of its proper divisors (11380141).

13211002020131 is a wasteful number, since it uses less digits than its factorization.

13211002020131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11380140.

The product of its (nonzero) digits is 72, while the sum is 17.

Adding to 13211002020131 its reverse (13102020011231), we get a palindrome (26313022031362).

The spelling of 13211002020131 in words is "thirteen trillion, two hundred eleven billion, two million, twenty thousand, one hundred thirty-one".