213522430651 has 2 divisors, whose sum is σ = 213522430652. Its totient is φ = 213522430650.

The previous prime is 213522430637. The next prime is 213522430679. The reversal of 213522430651 is 156034225312.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 213522430651 - 2⁷ = 213522430523 is a prime.

It is a super-2 number, since 2×213522430651² (a number of 23 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (213522433651) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106761215325 + 106761215326.

It is an arithmetic number, because the mean of its divisors is an integer number (106761215326).

Almost surely, 2^213522430651 is an apocalyptic number.

213522430651 is a deficient number, since it is larger than the sum of its proper divisors (1).

213522430651 is an equidigital number, since it uses as much as digits as its factorization.

213522430651 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 43200, while the sum is 34.

Adding to 213522430651 its reverse (156034225312), we get a palindrome (369556655963).

The spelling of 213522430651 in words is "two hundred thirteen billion, five hundred twenty-two million, four hundred thirty thousand, six hundred fifty-one".