10302221021 has 4 divisors (see below), whose sum is σ = 10844443200. Its totient is φ = 9759998844.

The previous prime is 10302220997. The next prime is 10302221023. The reversal of 10302221021 is 12012220301.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-10302221021 is a prime.

It is a super-2 number, since 2×10302221021² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 10302220987 and 10302221005.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10302221023) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 271111061 + ... + 271111098.

It is an arithmetic number, because the mean of its divisors is an integer number (2711110800).

Almost surely, 2^10302221021 is an apocalyptic number.

It is an amenable number.

10302221021 is a deficient number, since it is larger than the sum of its proper divisors (542222179).

10302221021 is an equidigital number, since it uses as much as digits as its factorization.

10302221021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 542222178.

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

Adding to 10302221021 its reverse (12012220301), we get a palindrome (22314441322).

The spelling of 10302221021 in words is "ten billion, three hundred two million, two hundred twenty-one thousand, twenty-one".