21020100201101 has 8 divisors (see below), whose sum is σ = 21097125653760. Its totient is φ = 20943161443008.

The previous prime is 21020100201011. The next prime is 21020100201103. The reversal of 21020100201101 is 10110200102012.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-21020100201101 is a prime.

It is a super-2 number, since 2×21020100201101² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21020100201103) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 21187811 + ... + 22157696.

It is an arithmetic number, because the mean of its divisors is an integer number (2637140706720).

Almost surely, 2^{21020100201101} is an apocalyptic number.

It is an amenable number.

21020100201101 is a deficient number, since it is larger than the sum of its proper divisors (77025452659).

21020100201101 is a wasteful number, since it uses less digits than its factorization.

21020100201101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43347283.

The product of its (nonzero) digits is 8, while the sum is 11.

Adding to 21020100201101 its reverse (10110200102012), we get a palindrome (31130300303113).

The spelling of 21020100201101 in words is "twenty-one trillion, twenty billion, one hundred million, two hundred one thousand, one hundred one".