10321322021 has 4 divisors (see below), whose sum is σ = 10321538700. Its totient is φ = 10321105344.

The previous prime is 10321321993. The next prime is 10321322023. The reversal of 10321322021 is 12022312301.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 12022312301 = 19 ⋅632753279.

It can be written as a sum of positive squares in 2 ways, for example, as 7283769025 + 3037552996 = 85345^2 + 55114^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-10321322021 is a prime.

It is a super-2 number, since 2×10321322021² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10321322023) 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, 2276 + ... + 143693.

It is an arithmetic number, because the mean of its divisors is an integer number (2580384675).

Almost surely, 2^10321322021 is an apocalyptic number.

It is an amenable number.

10321322021 is a deficient number, since it is larger than the sum of its proper divisors (216679).

10321322021 is an equidigital number, since it uses as much as digits as its factorization.

10321322021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 216678.

The product of its (nonzero) digits is 144, while the sum is 17.

Adding to 10321322021 its reverse (12022312301), we get a palindrome (22343634322).

The spelling of 10321322021 in words is "ten billion, three hundred twenty-one million, three hundred twenty-two thousand, twenty-one".