10202221021 has 8 divisors (see below), whose sum is σ = 10660619520. Its totient is φ = 9745057872.

The previous prime is 10202221013. The next prime is 10202221063. The reversal of 10202221021 is 12012220201.

It is a happy number.

10202221021 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 10202221021 - 2³ = 10202221013 is a prime.

It is a super-2 number, since 2×10202221021² (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 = 10202220992 and 10202221010.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10202221321) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 291930 + ... + 325003.

It is an arithmetic number, because the mean of its divisors is an integer number (1332577440).

Almost surely, 2^10202221021 is an apocalyptic number.

It is an amenable number.

10202221021 is a deficient number, since it is larger than the sum of its proper divisors (458398499).

10202221021 is an equidigital number, since it uses as much as digits as its factorization.

10202221021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 617675.

The product of its (nonzero) digits is 32, while the sum is 13.

Adding to 10202221021 its reverse (12012220201), we get a palindrome (22214441222).

The spelling of 10202221021 in words is "ten billion, two hundred two million, two hundred twenty-one thousand, twenty-one".