21201021120201 has 8 divisors (see below), whose sum is σ = 30442491864960. Its totient is φ = 13046782227792.

The previous prime is 21201021120179. The next prime is 21201021120211. The reversal of 21201021120201 is 10202112010212.

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

It is not a de Polignac number, because 21201021120201 - 2¹¹ = 21201021118153 is a prime.

It is not an unprimeable number, because it can be changed into a prime (21201021120211) 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, 271807963041 + ... + 271807963118.

It is an arithmetic number, because the mean of its divisors is an integer number (3805311483120).

Almost surely, 2^{21201021120201} is an apocalyptic number.

It is an amenable number.

21201021120201 is a deficient number, since it is larger than the sum of its proper divisors (9241470744759).

21201021120201 is a wasteful number, since it uses less digits than its factorization.

21201021120201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 543615926175.

The product of its (nonzero) digits is 32, while the sum is 15.

Adding to 21201021120201 its reverse (10202112010212), we get a palindrome (31403133130413).

The spelling of 21201021120201 in words is "twenty-one trillion, two hundred one billion, twenty-one million, one hundred twenty thousand, two hundred one".