212040124521 has 8 divisors (see below), whose sum is σ = 282973277184. Its totient is φ = 141233527440.

The previous prime is 212040124453. The next prime is 212040124529. The reversal of 212040124521 is 125421040212.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 212040124521 - 2¹³ = 212040116329 is a prime.

It is a super-2 number, since 2×212040124521² (a number of 23 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 212040124491 and 212040124500.

It is not an unprimeable number, because it can be changed into a prime (212040124529) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 31634985 + ... + 31641686.

It is an arithmetic number, because the mean of its divisors is an integer number (35371659648).

Almost surely, 2^212040124521 is an apocalyptic number.

It is an amenable number.

212040124521 is a deficient number, since it is larger than the sum of its proper divisors (70933152663).

212040124521 is a wasteful number, since it uses less digits than its factorization.

212040124521 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 63277791.

The product of its (nonzero) digits is 1280, while the sum is 24.

Adding to 212040124521 its reverse (125421040212), we get a palindrome (337461164733).

The spelling of 212040124521 in words is "two hundred twelve billion, forty million, one hundred twenty-four thousand, five hundred twenty-one".