213121102301 has 2 divisors, whose sum is σ = 213121102302. Its totient is φ = 213121102300.

The previous prime is 213121102279. The next prime is 213121102349. The reversal of 213121102301 is 103201121312.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 110865691225 + 102255411076 = 332965^2 + 319774^2 .

It is a cyclic number.

It is not a de Polignac number, because 213121102301 - 2¹⁸ = 213120840157 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 213121102301.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (213121102501) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106560551150 + 106560551151.

It is an arithmetic number, because the mean of its divisors is an integer number (106560551151).

Almost surely, 2^213121102301 is an apocalyptic number.

It is an amenable number.

213121102301 is a deficient number, since it is larger than the sum of its proper divisors (1).

213121102301 is an equidigital number, since it uses as much as digits as its factorization.

213121102301 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 72, while the sum is 17.

Adding to 213121102301 its reverse (103201121312), we get a palindrome (316322223613).

The spelling of 213121102301 in words is "two hundred thirteen billion, one hundred twenty-one million, one hundred two thousand, three hundred one".