213522430052 has 6 divisors (see below), whose sum is σ = 373664252598. Its totient is φ = 106761215024.

The previous prime is 213522429959. The next prime is 213522430073. The reversal of 213522430052 is 250034225312.

It can be written as a sum of positive squares in only one way, i.e., 213468024676 + 54405376 = 462026^2 + 7376^2 .

It is a super-2 number, since 2×213522430052² (a number of 23 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 213522429997 and 213522430024.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 26690303753 + ... + 26690303760.

It is an arithmetic number, because the mean of its divisors is an integer number (62277375433).

Almost surely, 2^213522430052 is an apocalyptic number.

It is an amenable number.

213522430052 is a deficient number, since it is larger than the sum of its proper divisors (160141822546).

213522430052 is a wasteful number, since it uses less digits than its factorization.

213522430052 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 53380607517 (or 53380607515 counting only the distinct ones).

The product of its (nonzero) digits is 14400, while the sum is 29.

Adding to 213522430052 its reverse (250034225312), we get a palindrome (463556655364).

The spelling of 213522430052 in words is "two hundred thirteen billion, five hundred twenty-two million, four hundred thirty thousand, fifty-two".