212441420243 has 4 divisors (see below), whose sum is σ = 228783067968. Its totient is φ = 196099772520.

The previous prime is 212441420197. The next prime is 212441420251. The reversal of 212441420243 is 342024144212.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 212441420243 - 2¹⁴ = 212441403859 is a prime.

It is not an unprimeable number, because it can be changed into a prime (212441410243) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8170823843 + ... + 8170823868.

It is an arithmetic number, because the mean of its divisors is an integer number (57195766992).

Almost surely, 2^212441420243 is an apocalyptic number.

212441420243 is a deficient number, since it is larger than the sum of its proper divisors (16341647725).

212441420243 is a wasteful number, since it uses less digits than its factorization.

212441420243 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16341647724.

The product of its (nonzero) digits is 12288, while the sum is 29.

Adding to 212441420243 its reverse (342024144212), we get a palindrome (554465564455).

The spelling of 212441420243 in words is "two hundred twelve billion, four hundred forty-one million, four hundred twenty thousand, two hundred forty-three".