212432242051 has 4 divisors (see below), whose sum is σ = 221668426512. Its totient is φ = 203196057592.

The previous prime is 212432242007. The next prime is 212432242069. The reversal of 212432242051 is 150242234212.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-212432242051 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (212432242091) 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, 4618092196 + ... + 4618092241.

It is an arithmetic number, because the mean of its divisors is an integer number (55417106628).

Almost surely, 2^212432242051 is an apocalyptic number.

212432242051 is a deficient number, since it is larger than the sum of its proper divisors (9236184461).

212432242051 is an equidigital number, since it uses as much as digits as its factorization.

212432242051 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9236184460.

The product of its (nonzero) digits is 7680, while the sum is 28.

Adding to 212432242051 its reverse (150242234212), we get a palindrome (362674476263).

The spelling of 212432242051 in words is "two hundred twelve billion, four hundred thirty-two million, two hundred forty-two thousand, fifty-one".