10021220323 has 4 divisors (see below), whose sum is σ = 10021462360. Its totient is φ = 10020978288.

The previous prime is 10021220243. The next prime is 10021220327. The reversal of 10021220323 is 32302212001.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 32302212001 = 131 ⋅246581771.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-10021220323 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 10021220297 and 10021220306.

It is not an unprimeable number, because it can be changed into a prime (10021220327) 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, 41493 + ... + 147526.

It is an arithmetic number, because the mean of its divisors is an integer number (2505365590).

Almost surely, 2^10021220323 is an apocalyptic number.

10021220323 is a deficient number, since it is larger than the sum of its proper divisors (242037).

10021220323 is an equidigital number, since it uses as much as digits as its factorization.

10021220323 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 242036.

The product of its (nonzero) digits is 144, while the sum is 16.

Adding to 10021220323 its reverse (32302212001), we get a palindrome (42323432324).

The spelling of 10021220323 in words is "ten billion, twenty-one million, two hundred twenty thousand, three hundred twenty-three".