13043221101 has 12 divisors (see below), whose sum is σ = 19537994112. Its totient is φ = 8695480572.

The previous prime is 13043221073. The next prime is 13043221123. The reversal of 13043221101 is 10112234031.

13043221101 is a `hidden beast` number, since 130 + 432 + 2 + 1 + 101 = 666.

It is not a de Polignac number, because 13043221101 - 2⁷ = 13043220973 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13043221171) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 26837661 + ... + 26838146.

It is an arithmetic number, because the mean of its divisors is an integer number (1628166176).

Almost surely, 2^13043221101 is an apocalyptic number.

It is an amenable number.

13043221101 is a deficient number, since it is larger than the sum of its proper divisors (6494773011).

13043221101 is an frugal number, since it uses more digits than its factorization.

13043221101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 53675822 (or 53675810 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 18.

Adding to 13043221101 its reverse (10112234031), we get a palindrome (23155455132).

The spelling of 13043221101 in words is "thirteen billion, forty-three million, two hundred twenty-one thousand, one hundred one".