212121200010122 has 8 divisors (see below), whose sum is σ = 342657323093316. Its totient is φ = 97902092312352.

The previous prime is 212121200010119. The next prime is 212121200010127. The reversal of 212121200010122 is 221010002121212.

It can be written as a sum of positive squares in 2 ways, for example, as 179735073453961 + 32386126556161 = 13406531^2 + 5690881^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a self number, because there is not a number n which added to its sum of digits gives 212121200010122.

It is not an unprimeable number, because it can be changed into a prime (212121200010127) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4079253846323 + ... + 4079253846374.

Almost surely, 2^{212121200010122} is an apocalyptic number.

212121200010122 is a deficient number, since it is larger than the sum of its proper divisors (130536123083194).

212121200010122 is a wasteful number, since it uses less digits than its factorization.

212121200010122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8158507692712.

The product of its (nonzero) digits is 64, while the sum is 17.

Adding to 212121200010122 its reverse (221010002121212), we get a palindrome (433131202131334).

The spelling of 212121200010122 in words is "two hundred twelve trillion, one hundred twenty-one billion, two hundred million, ten thousand, one hundred twenty-two".