213545121759223 has 2 divisors, whose sum is σ = 213545121759224. Its totient is φ = 213545121759222.

The previous prime is 213545121759199. The next prime is 213545121759289. The reversal of 213545121759223 is 322957121545312.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-213545121759223 is a prime.

It is a super-2 number, since 2×213545121759223² (a number of 29 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (213545121759523) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106772560879611 + 106772560879612.

It is an arithmetic number, because the mean of its divisors is an integer number (106772560879612).

Almost surely, 2^{213545121759223} is an apocalyptic number.

213545121759223 is a deficient number, since it is larger than the sum of its proper divisors (1).

213545121759223 is an equidigital number, since it uses as much as digits as its factorization.

213545121759223 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 4536000, while the sum is 52.

The spelling of 213545121759223 in words is "two hundred thirteen trillion, five hundred forty-five billion, one hundred twenty-one million, seven hundred fifty-nine thousand, two hundred twenty-three".