213121301 has 8 divisors (see below), whose sum is σ = 214402944. Its totient is φ = 211844160.

The previous prime is 213121283. The next prime is 213121303. The reversal of 213121301 is 103121312.

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

It is a cyclic number.

It is not a de Polignac number, because 213121301 - 2²⁶ = 146012437 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (213121303) 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, 142580 + ... + 144066.

It is an arithmetic number, because the mean of its divisors is an integer number (26800368).

Almost surely, 2^213121301 is an apocalyptic number.

It is an amenable number.

213121301 is a deficient number, since it is larger than the sum of its proper divisors (1281643).

213121301 is a wasteful number, since it uses less digits than its factorization.

213121301 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2251.

The product of its (nonzero) digits is 36, while the sum is 14.

The square root of 213121301 is about 14598.6746316232. The cubic root of 213121301 is about 597.3226083573.

Adding to 213121301 its reverse (103121312), we get a palindrome (316242613).

It can be divided in two parts, 2131 and 21301, that added together give a palindrome (23432).

The spelling of 213121301 in words is "two hundred thirteen million, one hundred twenty-one thousand, three hundred one".