213292575521 has 2 divisors, whose sum is σ = 213292575522. Its totient is φ = 213292575520.

The previous prime is 213292575493. The next prime is 213292575611. The reversal of 213292575521 is 125575292312.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 160684731025 + 52607844496 = 400855^2 + 229364^2 .

It is a cyclic number.

It is not a de Polignac number, because 213292575521 - 2³⁴ = 196112706337 is a prime.

It is not a weakly prime, because it can be changed into another prime (213292575121) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106646287760 + 106646287761.

It is an arithmetic number, because the mean of its divisors is an integer number (106646287761).

Almost surely, 2^213292575521 is an apocalyptic number.

It is an amenable number.

213292575521 is a deficient number, since it is larger than the sum of its proper divisors (1).

213292575521 is an equidigital number, since it uses as much as digits as its factorization.

213292575521 is an evil number, because the sum of its binary digits is even.

The product of its digits is 378000, while the sum is 44.

The spelling of 213292575521 in words is "two hundred thirteen billion, two hundred ninety-two million, five hundred seventy-five thousand, five hundred twenty-one".