21102020000201 has 8 divisors (see below), whose sum is σ = 24117644249664. Its totient is φ = 18086658241680.

The previous prime is 21102020000177. The next prime is 21102020000203. The reversal of 21102020000201 is 10200002020112.

It is a happy number.

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

It is not a de Polignac number, because 21102020000201 - 2⁶ = 21102020000137 is a prime.

It is not an unprimeable number, because it can be changed into a prime (21102020000203) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 65450435 + ... + 65772056.

It is an arithmetic number, because the mean of its divisors is an integer number (3014705531208).

Almost surely, 2^{21102020000201} is an apocalyptic number.

It is an amenable number.

21102020000201 is a deficient number, since it is larger than the sum of its proper divisors (3015624249463).

21102020000201 is a wasteful number, since it uses less digits than its factorization.

21102020000201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 131245471.

The product of its (nonzero) digits is 16, while the sum is 11.

Adding to 21102020000201 its reverse (10200002020112), we get a palindrome (31302022020313).

The spelling of 21102020000201 in words is "twenty-one trillion, one hundred two billion, twenty million, two hundred one", and thus it is an aban number.