210121321201 has 16 divisors (see below), whose sum is σ = 229527442368. Its totient is φ = 190766080000.

The previous prime is 210121321183. The next prime is 210121321217. The reversal of 210121321201 is 102123121012.

It is a cyclic number.

It is not a de Polignac number, because 210121321201 - 2¹¹ = 210121319153 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (210121321301) 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, 52515201 + ... + 52519201.

It is an arithmetic number, because the mean of its divisors is an integer number (14345465148).

Almost surely, 2^210121321201 is an apocalyptic number.

It is an amenable number.

210121321201 is a deficient number, since it is larger than the sum of its proper divisors (19406121167).

210121321201 is a wasteful number, since it uses less digits than its factorization.

210121321201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9152.

The product of its (nonzero) digits is 48, while the sum is 16.

Adding to 210121321201 its reverse (102123121012), we get a palindrome (312244442213).

The spelling of 210121321201 in words is "two hundred ten billion, one hundred twenty-one million, three hundred twenty-one thousand, two hundred one".