1113130211221 has 4 divisors (see below), whose sum is σ = 1272148812832. Its totient is φ = 954111609612.

The previous prime is 1113130211201. The next prime is 1113130211243. The reversal of 1113130211221 is 1221120313111.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a de Polignac number, because none of the positive numbers 2^k-1113130211221 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1113130211201) 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, 79509300795 + ... + 79509300808.

It is an arithmetic number, because the mean of its divisors is an integer number (318037203208).

Almost surely, 2^{1113130211221} is an apocalyptic number.

It is an amenable number.

1113130211221 is a deficient number, since it is larger than the sum of its proper divisors (159018601611).

1113130211221 is an equidigital number, since it uses as much as digits as its factorization.

1113130211221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 159018601610.

The product of its (nonzero) digits is 72, while the sum is 19.

Adding to 1113130211221 its reverse (1221120313111), we get a palindrome (2334250524332).

The spelling of 1113130211221 in words is "one trillion, one hundred thirteen billion, one hundred thirty million, two hundred eleven thousand, two hundred twenty-one".