21020201112001 has 32 divisors (see below), whose sum is σ = 27393313086720. Its totient is φ = 15652782544896.

The previous prime is 21020201111951. The next prime is 21020201112007. The reversal of 21020201112001 is 10021110202012.

It is not a de Polignac number, because 21020201112001 - 2¹¹ = 21020201109953 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (13).

It is not an unprimeable number, because it can be changed into a prime (21020201112007) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 165073965 + ... + 165201253.

It is an arithmetic number, because the mean of its divisors is an integer number (856041033960).

Almost surely, 2^{21020201112001} is an apocalyptic number.

It is an amenable number.

21020201112001 is a deficient number, since it is larger than the sum of its proper divisors (6373111974719).

21020201112001 is a wasteful number, since it uses less digits than its factorization.

21020201112001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 234073.

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

Adding to 21020201112001 its reverse (10021110202012), we get a palindrome (31041311314013).

The spelling of 21020201112001 in words is "twenty-one trillion, twenty billion, two hundred one million, one hundred twelve thousand, one".