10040312021 has 2 divisors, whose sum is σ = 10040312022. Its totient is φ = 10040312020.

The previous prime is 10040312017. The next prime is 10040312027. The reversal of 10040312021 is 12021304001.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 9942084100 + 98227921 = 99710^2 + 9911^2 .

It is a cyclic number.

It is not a de Polignac number, because 10040312021 - 2² = 10040312017 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 10040311987 and 10040312005.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (10040312027) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5020156010 + 5020156011.

It is an arithmetic number, because the mean of its divisors is an integer number (5020156011).

Almost surely, 2^10040312021 is an apocalyptic number.

It is an amenable number.

10040312021 is a deficient number, since it is larger than the sum of its proper divisors (1).

10040312021 is an equidigital number, since it uses as much as digits as its factorization.

10040312021 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 48, while the sum is 14.

Adding to 10040312021 its reverse (12021304001), we get a palindrome (22061616022).

The spelling of 10040312021 in words is "ten billion, forty million, three hundred twelve thousand, twenty-one".