1010043121 has 4 divisors (see below), whose sum is σ = 1015686000. Its totient is φ = 1004400244.

The previous prime is 1010043119. The next prime is 1010043149. The reversal of 1010043121 is 1213400101.

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 cyclic number.

It is not a de Polignac number, because 1010043121 - 2¹ = 1010043119 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1010043421) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2821171 + ... + 2821528.

It is an arithmetic number, because the mean of its divisors is an integer number (253921500).

Almost surely, 2^1010043121 is an apocalyptic number.

It is an amenable number.

1010043121 is a deficient number, since it is larger than the sum of its proper divisors (5642879).

1010043121 is an equidigital number, since it uses as much as digits as its factorization.

1010043121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5642878.

The product of its (nonzero) digits is 24, while the sum is 13.

The square root of 1010043121 is about 31781.1755761174. The cubic root of 1010043121 is about 1003.3365619726.

Adding to 1010043121 its reverse (1213400101), we get a palindrome (2223443222).

The spelling of 1010043121 in words is "one billion, ten million, forty-three thousand, one hundred twenty-one".