212240230442 has 8 divisors (see below), whose sum is σ = 318948813732. Its totient is φ = 105923959200.

The previous prime is 212240230439. The next prime is 212240230469. The reversal of 212240230442 is 244032042212.

It can be written as a sum of positive squares in 2 ways, for example, as 176930438161 + 35309792281 = 420631^2 + 187909^2 .

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

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, 98076659 + ... + 98078822.

Almost surely, 2^212240230442 is an apocalyptic number.

212240230442 is a deficient number, since it is larger than the sum of its proper divisors (106708583290).

212240230442 is a wasteful number, since it uses less digits than its factorization.

212240230442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 196156024.

The product of its (nonzero) digits is 6144, while the sum is 26.

Adding to 212240230442 its reverse (244032042212), we get a palindrome (456272272654).

The spelling of 212240230442 in words is "two hundred twelve billion, two hundred forty million, two hundred thirty thousand, four hundred forty-two".