10221201122021 has 8 divisors (see below), whose sum is σ = 10247122113144. Its totient is φ = 10195311533760.

The previous prime is 10221201121969. The next prime is 10221201122047. The reversal of 10221201122021 is 12022110212201.

It can be written as a sum of positive squares in 4 ways, for example, as 3087435552100 + 7133765569921 = 1757110^2 + 2670911^2 .

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-10221201122021 is a prime.

It is a super-2 number, since 2×10221201122021² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10221201122051) 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, 7198850 + ... + 8500931.

It is an arithmetic number, because the mean of its divisors is an integer number (1280890264143).

Almost surely, 2^{10221201122021} is an apocalyptic number.

It is an amenable number.

10221201122021 is a deficient number, since it is larger than the sum of its proper divisors (25920991123).

10221201122021 is an equidigital number, since it uses as much as digits as its factorization.

10221201122021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15701431.

The product of its (nonzero) digits is 64, while the sum is 17.

Adding to 10221201122021 its reverse (12022110212201), we get a palindrome (22243311334222).

The spelling of 10221201122021 in words is "ten trillion, two hundred twenty-one billion, two hundred one million, one hundred twenty-two thousand, twenty-one".