213121000301 has 6 divisors (see below), whose sum is σ = 234256967406. Its totient is φ = 193746363800.

The previous prime is 213121000291. The next prime is 213121000387. The reversal of 213121000301 is 103000121312.

It can be written as a sum of positive squares in only one way, i.e., 193203323401 + 19917676900 = 439549^2 + 141130^2 .

It is not a de Polignac number, because 213121000301 - 2¹⁰ = 213120999277 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (213121008301) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 880665170 + ... + 880665411.

It is an arithmetic number, because the mean of its divisors is an integer number (39042827901).

Almost surely, 2^213121000301 is an apocalyptic number.

It is an amenable number.

213121000301 is a deficient number, since it is larger than the sum of its proper divisors (21135967105).

213121000301 is a wasteful number, since it uses less digits than its factorization.

213121000301 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1761330603 (or 1761330592 counting only the distinct ones).

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

Adding to 213121000301 its reverse (103000121312), we get a palindrome (316121121613).

The spelling of 213121000301 in words is "two hundred thirteen billion, one hundred twenty-one million, three hundred one", and thus it is an aban number.