21020211010201 has 8 divisors (see below), whose sum is σ = 22637196614144. Its totient is φ = 19403232019920.

The previous prime is 21020211010199. The next prime is 21020211010307. The reversal of 21020211010201 is 10201011202012.

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 21020211010201 - 2¹ = 21020211010199 is a prime.

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

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21020212010201) 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, 6400840 + ... + 9111046.

It is an arithmetic number, because the mean of its divisors is an integer number (2829649576768).

Almost surely, 2^{21020211010201} is an apocalyptic number.

It is an amenable number.

21020211010201 is a deficient number, since it is larger than the sum of its proper divisors (1616985603943).

21020211010201 is a wasteful number, since it uses less digits than its factorization.

21020211010201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3306831.

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

Adding to 21020211010201 its reverse (10201011202012), we get a palindrome (31221222212213).

The spelling of 21020211010201 in words is "twenty-one trillion, twenty billion, two hundred eleven million, ten thousand, two hundred one".