10110221021 has 12 divisors (see below), whose sum is σ = 10687709340. Its totient is φ = 9561942720.

The previous prime is 10110221003. The next prime is 10110221027. The reversal of 10110221021 is 12012201101.

It can be written as a sum of positive squares in 2 ways, for example, as 1295640025 + 8814580996 = 35995^2 + 93886^2 .

It is a de Polignac number, because none of the positive numbers 2^k-10110221021 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 10110220993 and 10110221011.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10110221027) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 60290 + ... + 154451.

It is an arithmetic number, because the mean of its divisors is an integer number (890642445).

Almost surely, 2^10110221021 is an apocalyptic number.

It is an amenable number.

10110221021 is a deficient number, since it is larger than the sum of its proper divisors (577488319).

10110221021 is an equidigital number, since it uses as much as digits as its factorization.

10110221021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 214876 (or 214853 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 11.

Adding to 10110221021 its reverse (12012201101), we get a palindrome (22122422122).

The spelling of 10110221021 in words is "ten billion, one hundred ten million, two hundred twenty-one thousand, twenty-one".