20211001201021 has 8 divisors (see below), whose sum is σ = 20261747563200. Its totient is φ = 20160308513280.

The previous prime is 20211001200917. The next prime is 20211001201051. The reversal of 20211001201021 is 12010210011202.

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 20211001201021 - 2⁷ = 20211001200893 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 20211001200992 and 20211001201010.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20211001201051) 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, 12664516 + ... + 14170813.

It is an arithmetic number, because the mean of its divisors is an integer number (2532718445400).

Almost surely, 2^{20211001201021} is an apocalyptic number.

It is an amenable number.

20211001201021 is a deficient number, since it is larger than the sum of its proper divisors (50746362179).

20211001201021 is a wasteful number, since it uses less digits than its factorization.

20211001201021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26837219.

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

Adding to 20211001201021 its reverse (12010210011202), we get a palindrome (32221211212223).

The spelling of 20211001201021 in words is "twenty trillion, two hundred eleven billion, one million, two hundred one thousand, twenty-one".