13021211221100 has 54 divisors (see below), whose sum is σ = 28377831163500. Its totient is φ = 5186128315520.

The previous prime is 13021211221099. The next prime is 13021211221103. The reversal of 13021211221100 is 112211212031.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (13021211221103) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 4229651 + ... + 6628149.

Almost surely, 2^{13021211221100} is an apocalyptic number.

13021211221100 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

13021211221100 is an abundant number, since it is smaller than the sum of its proper divisors (15356619942400).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

13021211221100 is a wasteful number, since it uses less digits than its factorization.

13021211221100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2398979 (or 2398739 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 17.

Adding to 13021211221100 its reverse (112211212031), we get a palindrome (13133422433131).

The spelling of 13021211221100 in words is "thirteen trillion, twenty-one billion, two hundred eleven million, two hundred twenty-one thousand, one hundred".