210100201321 has 4 divisors (see below), whose sum is σ = 211959495252. Its totient is φ = 208240907392.

The previous prime is 210100201231. The next prime is 210100201331. The reversal of 210100201321 is 123102001012.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 75411201321 + 134689000000 = 274611^2 + 367000^2 .

It is a cyclic number.

It is not a de Polignac number, because 210100201321 - 2⁹ = 210100200809 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (210100201331) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 929646796 + ... + 929647021.

It is an arithmetic number, because the mean of its divisors is an integer number (52989873813).

Almost surely, 2^210100201321 is an apocalyptic number.

It is an amenable number.

210100201321 is a deficient number, since it is larger than the sum of its proper divisors (1859293931).

210100201321 is a wasteful number, since it uses less digits than its factorization.

210100201321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1859293930.

The product of its (nonzero) digits is 24, while the sum is 13.

Adding to 210100201321 its reverse (123102001012), we get a palindrome (333202202333).

The spelling of 210100201321 in words is "two hundred ten billion, one hundred million, two hundred one thousand, three hundred twenty-one".