10221020001001 has 4 divisors (see below), whose sum is σ = 10222066495872. Its totient is φ = 10219973506132.

The previous prime is 10221020000953. The next prime is 10221020001053. The reversal of 10221020001001 is 10010002012201.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 10221020001001 - 2¹¹ = 10221019998953 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (10221020001301) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 523232785 + ... + 523252318.

It is an arithmetic number, because the mean of its divisors is an integer number (2555516623968).

Almost surely, 2^{10221020001001} is an apocalyptic number.

It is an amenable number.

10221020001001 is a deficient number, since it is larger than the sum of its proper divisors (1046494871).

10221020001001 is an equidigital number, since it uses as much as digits as its factorization.

10221020001001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1046494870.

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

Adding to 10221020001001 its reverse (10010002012201), we get a palindrome (20231022013202).

The spelling of 10221020001001 in words is "ten trillion, two hundred twenty-one billion, twenty million, one thousand, one".