1010320121 has 4 divisors (see below), whose sum is σ = 1010409972. Its totient is φ = 1010230272.

The previous prime is 1010320049. The next prime is 1010320123. The reversal of 1010320121 is 1210230101.

1010320121 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 1210230101 = 3643 ⋅332207.

It can be written as a sum of positive squares in 2 ways, for example, as 304886521 + 705433600 = 17461^2 + 26560^2 .

It is a cyclic number.

It is not a de Polignac number, because 1010320121 - 2¹⁸ = 1010057977 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (1010320123) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 25160 + ... + 51513.

It is an arithmetic number, because the mean of its divisors is an integer number (252602493).

Almost surely, 2^1010320121 is an apocalyptic number.

It is an amenable number.

1010320121 is a deficient number, since it is larger than the sum of its proper divisors (89851).

1010320121 is an equidigital number, since it uses as much as digits as its factorization.

1010320121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 89850.

The product of its (nonzero) digits is 12, while the sum is 11.

The square root of 1010320121 is about 31785.5332030155. The cubic root of 1010320121 is about 1003.4282738409.

Adding to 1010320121 its reverse (1210230101), we get a palindrome (2220550222).

The spelling of 1010320121 in words is "one billion, ten million, three hundred twenty thousand, one hundred twenty-one".