1113032021 has 2 divisors, whose sum is σ = 1113032022. Its totient is φ = 1113032020.

The previous prime is 1113031981. The next prime is 1113032057. The reversal of 1113032021 is 1202303111.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 818532100 + 294499921 = 28610^2 + 17161^2 .

It is an emirp because it is prime and its reverse (1202303111) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1113032021 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1113031987 and 1113032005.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1113037021) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 556516010 + 556516011.

It is an arithmetic number, because the mean of its divisors is an integer number (556516011).

Almost surely, 2^1113032021 is an apocalyptic number.

It is an amenable number.

1113032021 is a deficient number, since it is larger than the sum of its proper divisors (1).

1113032021 is an equidigital number, since it uses as much as digits as its factorization.

1113032021 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 36, while the sum is 14.

The square root of 1113032021 is about 33362.1345390249. The cubic root of 1113032021 is about 1036.3406963852.

Adding to 1113032021 its reverse (1202303111), we get a palindrome (2315335132).

The spelling of 1113032021 in words is "one billion, one hundred thirteen million, thirty-two thousand, twenty-one".