20210221201001 has 8 divisors (see below), whose sum is σ = 22071400835904. Its totient is φ = 18392834028240.

The previous prime is 20210221200959. The next prime is 20210221201021. The reversal of 20210221201001 is 10010212201202.

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 20210221201001 - 2¹⁰ = 20210221199977 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (20210221201021) 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, 10948114571 + ... + 10948116416.

It is an arithmetic number, because the mean of its divisors is an integer number (2758925104488).

Almost surely, 2^{20210221201001} is an apocalyptic number.

It is an amenable number.

20210221201001 is a deficient number, since it is larger than the sum of its proper divisors (1861179634903).

20210221201001 is a wasteful number, since it uses less digits than its factorization.

20210221201001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21896231071.

The product of its (nonzero) digits is 32, while the sum is 14.

Adding to 20210221201001 its reverse (10010212201202), we get a palindrome (30220433402203).

The spelling of 20210221201001 in words is "twenty trillion, two hundred ten billion, two hundred twenty-one million, two hundred one thousand, one".