22303201021 has 4 divisors (see below), whose sum is σ = 22303525500. Its totient is φ = 22302876544.

The previous prime is 22303201003. The next prime is 22303201027. The reversal of 22303201021 is 12010230322.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 12010230322 = 2 ⋅6005115161.

It can be written as a sum of positive squares in 2 ways, for example, as 17613005796 + 4690195225 = 132714^2 + 68485^2 .

It is a cyclic number.

It is not a de Polignac number, because 22303201021 - 2¹⁷ = 22303069949 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 22303200986 and 22303201004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22303201027) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13966 + ... + 211663.

It is an arithmetic number, because the mean of its divisors is an integer number (5575881375).

Almost surely, 2^22303201021 is an apocalyptic number.

It is an amenable number.

22303201021 is a deficient number, since it is larger than the sum of its proper divisors (324479).

22303201021 is an equidigital number, since it uses as much as digits as its factorization.

22303201021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 324478.

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

Adding to 22303201021 its reverse (12010230322), we get a palindrome (34313431343).

The spelling of 22303201021 in words is "twenty-two billion, three hundred three million, two hundred one thousand, twenty-one".