10221120001 has 4 divisors (see below), whose sum is σ = 10822362372. Its totient is φ = 9619877632.

The previous prime is 10221119989. The next prime is 10221120011. The reversal of 10221120001 is 10002112201.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 10002112201 = 17401 ⋅574801.

It can be written as a sum of positive squares in 2 ways, for example, as 5787557776 + 4433562225 = 76076^2 + 66585^2 .

It is a cyclic number.

It is not a de Polignac number, because 10221120001 - 2¹⁹ = 10220595713 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 10221120001.

It is not an unprimeable number, because it can be changed into a prime (10221120011) 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, 300621160 + ... + 300621193.

It is an arithmetic number, because the mean of its divisors is an integer number (2705590593).

Almost surely, 2^10221120001 is an apocalyptic number.

It is an amenable number.

10221120001 is a deficient number, since it is larger than the sum of its proper divisors (601242371).

10221120001 is an equidigital number, since it uses as much as digits as its factorization.

10221120001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 601242370.

The product of its (nonzero) digits is 8, while the sum is 10.

Adding to 10221120001 its reverse (10002112201), we get a palindrome (20223232202).

The spelling of 10221120001 in words is "ten billion, two hundred twenty-one million, one hundred twenty thousand, one".