1000112021 has 2 divisors, whose sum is σ = 1000112022. Its totient is φ = 1000112020.

The previous prime is 1000112011. The next prime is 1000112027. The reversal of 1000112021 is 1202110001.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 978813796 + 21298225 = 31286^2 + 4615^2 .

It is a cyclic number.

It is not a de Polignac number, because 1000112021 - 2¹⁰ = 1000110997 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1000112027) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 500056010 + 500056011.

It is an arithmetic number, because the mean of its divisors is an integer number (500056011).

Almost surely, 2^1000112021 is an apocalyptic number.

It is an amenable number.

1000112021 is a deficient number, since it is larger than the sum of its proper divisors (1).

1000112021 is an equidigital number, since it uses as much as digits as its factorization.

1000112021 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4, while the sum is 8.

The square root of 1000112021 is about 31624.5477596123. The cubic root of 1000112021 is about 1000.0373389391.

Adding to 1000112021 its reverse (1202110001), we get a palindrome (2202222022).

It can be divided in two parts, 10001 and 12021, that multiplied together give a palindrome (120222021).

The spelling of 1000112021 in words is "one billion, one hundred twelve thousand, twenty-one".