213200121913 has 2 divisors, whose sum is σ = 213200121914. Its totient is φ = 213200121912.

The previous prime is 213200121881. The next prime is 213200121917. The reversal of 213200121913 is 319121002312.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 143098028089 + 70102093824 = 378283^2 + 264768^2 .

It is a cyclic number.

It is not a de Polignac number, because 213200121913 - 2⁵ = 213200121881 is a prime.

It is not a weakly prime, because it can be changed into another prime (213200121917) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106600060956 + 106600060957.

It is an arithmetic number, because the mean of its divisors is an integer number (106600060957).

Almost surely, 2^213200121913 is an apocalyptic number.

It is an amenable number.

213200121913 is a deficient number, since it is larger than the sum of its proper divisors (1).

213200121913 is an equidigital number, since it uses as much as digits as its factorization.

213200121913 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 648, while the sum is 25.

The spelling of 213200121913 in words is "two hundred thirteen billion, two hundred million, one hundred twenty-one thousand, nine hundred thirteen".