210201120200021 has 16 divisors (see below), whose sum is σ = 211506412336128. Its totient is φ = 208898059406400.

The previous prime is 210201120199991. The next prime is 210201120200023. The reversal of 210201120200021 is 120002021102012.

It is a cyclic number.

It is not a de Polignac number, because 210201120200021 - 2¹⁰ = 210201120198997 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 210201120199969 and 210201120200005.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (210201120200023) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 824925191 + ... + 825179963.

It is an arithmetic number, because the mean of its divisors is an integer number (13219150771008).

Almost surely, 2^{210201120200021} is an apocalyptic number.

It is an amenable number.

210201120200021 is a deficient number, since it is larger than the sum of its proper divisors (1305292136107).

210201120200021 is a wasteful number, since it uses less digits than its factorization.

210201120200021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 259132.

The product of its (nonzero) digits is 32, while the sum is 14.

Adding to 210201120200021 its reverse (120002021102012), we get a palindrome (330203141302033).

The spelling of 210201120200021 in words is "two hundred ten trillion, two hundred one billion, one hundred twenty million, two hundred thousand, twenty-one".