212021304342 has 16 divisors (see below), whose sum is σ = 446360640960. Its totient is φ = 66954096072.

The previous prime is 212021304337. The next prime is 212021304343. The reversal of 212021304342 is 243403120212.

It is a happy number.

212021304342 is digitally balanced in base 2 and base 3, because in such bases it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212021304343) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 929917888 + ... + 929918115.

It is an arithmetic number, because the mean of its divisors is an integer number (27897540060).

Almost surely, 2^212021304342 is an apocalyptic number.

212021304342 is an abundant number, since it is smaller than the sum of its proper divisors (234339336618).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

212021304342 is a wasteful number, since it uses less digits than its factorization.

212021304342 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1859836027.

The product of its (nonzero) digits is 2304, while the sum is 24.

Adding to 212021304342 its reverse (243403120212), we get a palindrome (455424424554).

The spelling of 212021304342 in words is "two hundred twelve billion, twenty-one million, three hundred four thousand, three hundred forty-two".