1113112021 has 8 divisors (see below), whose sum is σ = 1273196864. Its totient is φ = 953294400.

The previous prime is 1113112003. The next prime is 1113112027. The reversal of 1113112021 is 1202113111.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1113112021 - 2⁷ = 1113111893 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1113111992 and 1113112010.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1113112027) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 57795 + ... + 74608.

It is an arithmetic number, because the mean of its divisors is an integer number (159149608).

Almost surely, 2^1113112021 is an apocalyptic number.

It is an amenable number.

1113112021 is a deficient number, since it is larger than the sum of its proper divisors (160084843).

1113112021 is a wasteful number, since it uses less digits than its factorization.

1113112021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 133611.

The product of its (nonzero) digits is 12, while the sum is 13.

The square root of 1113112021 is about 33363.3334815333. Note that the first 3 decimals coincide. The cubic root of 1113112021 is about 1036.3655250418.

Adding to 1113112021 its reverse (1202113111), we get a palindrome (2315225132).

The spelling of 1113112021 in words is "one billion, one hundred thirteen million, one hundred twelve thousand, twenty-one".