20021101112201 has 6 divisors (see below), whose sum is σ = 23289852314250. Its totient is φ = 17160943810416.

The previous prime is 20021101112197. The next prime is 20021101112213. The reversal of 20021101112201 is 10221110112002.

It can be written as a sum of positive squares in only one way, i.e., 19642446720400 + 378654391801 = 4431980^2 + 615349^2 .

It is not a de Polignac number, because 20021101112201 - 2² = 20021101112197 is a prime.

It is a super-2 number, since 2×20021101112201² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20021101112231) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 204296950076 + ... + 204296950173.

It is an arithmetic number, because the mean of its divisors is an integer number (3881642052375).

Almost surely, 2^{20021101112201} is an apocalyptic number.

It is an amenable number.

20021101112201 is a deficient number, since it is larger than the sum of its proper divisors (3268751202049).

20021101112201 is an equidigital number, since it uses as much as digits as its factorization.

20021101112201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 408593900263 (or 408593900256 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 14.

Adding to 20021101112201 its reverse (10221110112002), we get a palindrome (30242211224203).

The spelling of 20021101112201 in words is "twenty trillion, twenty-one billion, one hundred one million, one hundred twelve thousand, two hundred one".