213530212621367 has 2 divisors, whose sum is σ = 213530212621368. Its totient is φ = 213530212621366.

The previous prime is 213530212621343. The next prime is 213530212621477. The reversal of 213530212621367 is 763126212035312.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 213530212621367 - 2⁸ = 213530212621111 is a prime.

It is a super-3 number, since 3×213530212621367³ (a number of 44 digits) contains 333 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (213538212621367) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106765106310683 + 106765106310684.

It is an arithmetic number, because the mean of its divisors is an integer number (106765106310684).

Almost surely, 2^{213530212621367} is an apocalyptic number.

213530212621367 is a deficient number, since it is larger than the sum of its proper divisors (1).

213530212621367 is an equidigital number, since it uses as much as digits as its factorization.

213530212621367 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 544320, while the sum is 44.

Adding to 213530212621367 its reverse (763126212035312), we get a palindrome (976656424656679).

The spelling of 213530212621367 in words is "two hundred thirteen trillion, five hundred thirty billion, two hundred twelve million, six hundred twenty-one thousand, three hundred sixty-seven".