212135559100242 has 32 divisors (see below), whose sum is σ = 424398647835072. Its totient is φ = 70690599209664.

The previous prime is 212135559100211. The next prime is 212135559100247. The reversal of 212135559100242 is 242001955531212.

It is a junction number, because it is equal to n+sod(n) for n = 212135559100194 and 212135559100203.

It is not an unprimeable number, because it can be changed into a prime (212135559100247) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 906123733 + ... + 906357815.

It is an arithmetic number, because the mean of its divisors is an integer number (13262457744846).

Almost surely, 2^{212135559100242} is an apocalyptic number.

212135559100242 is an abundant number, since it is smaller than the sum of its proper divisors (212263088734830).

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

212135559100242 is a wasteful number, since it uses less digits than its factorization.

212135559100242 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 278842.

The product of its (nonzero) digits is 216000, while the sum is 42.

The spelling of 212135559100242 in words is "two hundred twelve trillion, one hundred thirty-five billion, five hundred fifty-nine million, one hundred thousand, two hundred forty-two".