212212200002121 has 24 divisors (see below), whose sum is σ = 334936951094304. Its totient is φ = 128405004826560.

The previous prime is 212212200002119. The next prime is 212212200002141. The reversal of 212212200002121 is 121200002212212.

It is a happy number.

212212200002121 is a `hidden beast` number, since 212 + 21 + 220 + 0 + 0 + 0 + 212 + 1 = 666.

It is not a de Polignac number, because 212212200002121 - 2¹ = 212212200002119 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 212212200002094 and 212212200002103.

It is not an unprimeable number, because it can be changed into a prime (212212200002141) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1737019611 + ... + 1737141776.

It is an arithmetic number, because the mean of its divisors is an integer number (13955706295596).

Almost surely, 2^{212212200002121} is an apocalyptic number.

It is an amenable number.

212212200002121 is a deficient number, since it is larger than the sum of its proper divisors (122724751092183).

212212200002121 is a wasteful number, since it uses less digits than its factorization.

212212200002121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3474162021 (or 3474162018 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 18.

Adding to 212212200002121 its reverse (121200002212212), we get a palindrome (333412202214333).

The spelling of 212212200002121 in words is "two hundred twelve trillion, two hundred twelve billion, two hundred million, two thousand, one hundred twenty-one".