213530120124 has 12 divisors (see below), whose sum is σ = 498236946984. Its totient is φ = 71176706704.

The previous prime is 213530120119. The next prime is 213530120143. The reversal of 213530120124 is 421021035312.

It is a tau number, because it is divible by the number of its divisors (12).

It is a super-2 number, since 2×213530120124² (a number of 23 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 213530120094 and 213530120103.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8897088327 + ... + 8897088350.

It is an arithmetic number, because the mean of its divisors is an integer number (41519745582).

Almost surely, 2^213530120124 is an apocalyptic number.

It is an amenable number.

213530120124 is an abundant number, since it is smaller than the sum of its proper divisors (284706826860).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

213530120124 is a wasteful number, since it uses less digits than its factorization.

213530120124 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17794176684 (or 17794176682 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 24.

Adding to 213530120124 its reverse (421021035312), we get a palindrome (634551155436).

The spelling of 213530120124 in words is "two hundred thirteen billion, five hundred thirty million, one hundred twenty thousand, one hundred twenty-four".