212142104122 has 16 divisors (see below), whose sum is σ = 342729267552. Its totient is φ = 97900832880.

The previous prime is 212142104099. The next prime is 212142104123. The reversal of 212142104122 is 221401241212.

It is a junction number, because it is equal to n+sod(n) for n = 212142104093 and 212142104102.

It is not an unprimeable number, because it can be changed into a prime (212142104123) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 214204 + ... + 685687.

It is an arithmetic number, because the mean of its divisors is an integer number (21420579222).

Almost surely, 2^212142104122 is an apocalyptic number.

212142104122 is a deficient number, since it is larger than the sum of its proper divisors (130587163430).

212142104122 is a wasteful number, since it uses less digits than its factorization.

212142104122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 908973.

The product of its (nonzero) digits is 512, while the sum is 22.

Adding to 212142104122 its reverse (221401241212), we get a palindrome (433543345334).

The spelling of 212142104122 in words is "two hundred twelve billion, one hundred forty-two million, one hundred four thousand, one hundred twenty-two".