212240323442 has 16 divisors (see below), whose sum is σ = 363943390272. Its totient is φ = 90934429680.

The previous prime is 212240323433. The next prime is 212240323459. The reversal of 212240323442 is 244323042212.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2091068 + ... + 2190215.

It is an arithmetic number, because the mean of its divisors is an integer number (22746461892).

Almost surely, 2^212240323442 is an apocalyptic number.

212240323442 is a deficient number, since it is larger than the sum of its proper divisors (151703066830).

212240323442 is a wasteful number, since it uses less digits than its factorization.

212240323442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4284833.

The product of its (nonzero) digits is 18432, while the sum is 29.

Adding to 212240323442 its reverse (244323042212), we get a palindrome (456563365654).

The spelling of 212240323442 in words is "two hundred twelve billion, two hundred forty million, three hundred twenty-three thousand, four hundred forty-two".