212220134042 has 16 divisors (see below), whose sum is σ = 365255376192. Its totient is φ = 90589128000.

The previous prime is 212220134033. The next prime is 212220134081. The reversal of 212220134042 is 240431022212.

It is a junction number, because it is equal to n+sod(n) for n = 212220133999 and 212220134017.

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, 30192863 + ... + 30199890.

It is an arithmetic number, because the mean of its divisors is an integer number (22828461012).

Almost surely, 2^212220134042 is an apocalyptic number.

212220134042 is a deficient number, since it is larger than the sum of its proper divisors (153035242150).

212220134042 is a wasteful number, since it uses less digits than its factorization.

212220134042 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 60393013.

The product of its (nonzero) digits is 1536, while the sum is 23.

Adding to 212220134042 its reverse (240431022212), we get a palindrome (452651156254).

The spelling of 212220134042 in words is "two hundred twelve billion, two hundred twenty million, one hundred thirty-four thousand, forty-two".