10210112221021 has 8 divisors (see below), whose sum is σ = 10221968483640. Its totient is φ = 10198258355712.

The previous prime is 10210112221007. The next prime is 10210112221087. The reversal of 10210112221021 is 12012221101201.

It can be written as a sum of positive squares in 4 ways, for example, as 178886702500 + 10031225518521 = 422950^2 + 3167211^2 .

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 10210112221021 - 2²¹ = 10210110123869 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 10210112220986 and 10210112221004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10210112221091) 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 7 ways as a sum of consecutive naturals, for example, 7995045 + ... + 9183733.

It is an arithmetic number, because the mean of its divisors is an integer number (1277746060455).

Almost surely, 2^{10210112221021} is an apocalyptic number.

It is an amenable number.

10210112221021 is a deficient number, since it is larger than the sum of its proper divisors (11856262619).

10210112221021 is an equidigital number, since it uses as much as digits as its factorization.

10210112221021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1198655.

The product of its (nonzero) digits is 32, while the sum is 16.

Adding to 10210112221021 its reverse (12012221101201), we get a palindrome (22222333322222).

The spelling of 10210112221021 in words is "ten trillion, two hundred ten billion, one hundred twelve million, two hundred twenty-one thousand, twenty-one".