212412042221142 has 16 divisors (see below), whose sum is σ = 429030263497392. Its totient is φ = 70102984231200.

The previous prime is 212412042221107. The next prime is 212412042221147. The reversal of 212412042221142 is 241122240214212.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212412042221147) by changing a digit.

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, 175257459973 + ... + 175257461184.

It is an arithmetic number, because the mean of its divisors is an integer number (26814391468587).

Almost surely, 2^{212412042221142} is an apocalyptic number.

212412042221142 is an abundant number, since it is smaller than the sum of its proper divisors (216618221276250).

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

212412042221142 is a wasteful number, since it uses less digits than its factorization.

212412042221142 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 350514921263.

The product of its (nonzero) digits is 8192, while the sum is 30.

Adding to 212412042221142 its reverse (241122240214212), we get a palindrome (453534282435354).

The spelling of 212412042221142 in words is "two hundred twelve trillion, four hundred twelve billion, forty-two million, two hundred twenty-one thousand, one hundred forty-two".