10202201101021 has 4 divisors (see below), whose sum is σ = 10270672249500. Its totient is φ = 10133729952544.

The previous prime is 10202201100947. The next prime is 10202201101039. The reversal of 10202201101021 is 12010110220201.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 4520985840121 + 5681215260900 = 2126261^2 + 2383530^2 .

It is a cyclic number.

It is not a de Polignac number, because 10202201101021 - 2²⁵ = 10202167546589 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 10202201100992 and 10202201101010.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10202201101721) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 34235574016 + ... + 34235574313.

It is an arithmetic number, because the mean of its divisors is an integer number (2567668062375).

Almost surely, 2^{10202201101021} is an apocalyptic number.

It is an amenable number.

10202201101021 is a deficient number, since it is larger than the sum of its proper divisors (68471148479).

10202201101021 is an equidigital number, since it uses as much as digits as its factorization.

10202201101021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 68471148478.

The product of its (nonzero) digits is 16, while the sum is 13.

Adding to 10202201101021 its reverse (12010110220201), we get a palindrome (22212311321222).

The spelling of 10202201101021 in words is "ten trillion, two hundred two billion, two hundred one million, one hundred one thousand, twenty-one".