212432413021 has 4 divisors (see below), whose sum is σ = 212436151200. Its totient is φ = 212428674844.

The previous prime is 212432413013. The next prime is 212432413051. The reversal of 212432413021 is 120314234212.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 212432413021 - 2³ = 212432413013 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212432413001) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1782511 + ... + 1897948.

It is an arithmetic number, because the mean of its divisors is an integer number (53109037800).

Almost surely, 2^212432413021 is an apocalyptic number.

It is an amenable number.

212432413021 is a deficient number, since it is larger than the sum of its proper divisors (3738179).

212432413021 is an equidigital number, since it uses as much as digits as its factorization.

212432413021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3738178.

The product of its (nonzero) digits is 2304, while the sum is 25.

Adding to 212432413021 its reverse (120314234212), we get a palindrome (332746647233).

The spelling of 212432413021 in words is "two hundred twelve billion, four hundred thirty-two million, four hundred thirteen thousand, twenty-one".