1113001021 has 8 divisors (see below), whose sum is σ = 1223453088. Its totient is φ = 1004094000.

The previous prime is 1113001003. The next prime is 1113001061. The reversal of 1113001021 is 1201003111.

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 1113001021 - 2⁹ = 1113000509 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1113000989 and 1113001007.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1113001061) 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, 384750 + ... + 387631.

It is an arithmetic number, because the mean of its divisors is an integer number (152931636).

Almost surely, 2^1113001021 is an apocalyptic number.

1113001021 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

1113001021 is a deficient number, since it is larger than the sum of its proper divisors (110452067).

1113001021 is a wasteful number, since it uses less digits than its factorization.

1113001021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 772523.

The product of its (nonzero) digits is 6, while the sum is 10.

The square root of 1113001021 is about 33361.6699372199. The cubic root of 1113001021 is about 1036.3310749610.

Adding to 1113001021 its reverse (1201003111), we get a palindrome (2314004132).

The spelling of 1113001021 in words is "one billion, one hundred thirteen million, one thousand, twenty-one".