213112302101 has 2 divisors, whose sum is σ = 213112302102. Its totient is φ = 213112302100.

The previous prime is 213112302097. The next prime is 213112302119. The reversal of 213112302101 is 101203211312.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 122360739601 + 90751562500 = 349801^2 + 301250^2 .

It is a cyclic number.

It is not a de Polignac number, because 213112302101 - 2² = 213112302097 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 213112302101.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (213112302301) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106556151050 + 106556151051.

It is an arithmetic number, because the mean of its divisors is an integer number (106556151051).

Almost surely, 2^213112302101 is an apocalyptic number.

It is an amenable number.

213112302101 is a deficient number, since it is larger than the sum of its proper divisors (1).

213112302101 is an equidigital number, since it uses as much as digits as its factorization.

213112302101 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 213112302101 its reverse (101203211312), we get a palindrome (314315513413).

The spelling of 213112302101 in words is "two hundred thirteen billion, one hundred twelve million, three hundred two thousand, one hundred one".