212012010221121 has 24 divisors (see below), whose sum is σ = 334197289730304. Its totient is φ = 128446835686560.

The previous prime is 212012010221069. The next prime is 212012010221227. The reversal of 212012010221121 is 121122010210212.

212012010221121 is a `hidden beast` number, since 2 + 120 + 1 + 201 + 0 + 221 + 121 = 666.

It is not a de Polignac number, because 212012010221121 - 2¹⁵ = 212012010188353 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 212012010221094 and 212012010221103.

It is not an unprimeable number, because it can be changed into a prime (212012010221021) 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, 377148721 + ... + 377710446.

It is an arithmetic number, because the mean of its divisors is an integer number (13924887072096).

Almost surely, 2^{212012010221121} is an apocalyptic number.

It is an amenable number.

212012010221121 is a deficient number, since it is larger than the sum of its proper divisors (122185279509183).

212012010221121 is a wasteful number, since it uses less digits than its factorization.

212012010221121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 754862021 (or 754862018 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 18.

Adding to 212012010221121 its reverse (121122010210212), we get a palindrome (333134020431333).

The spelling of 212012010221121 in words is "two hundred twelve trillion, twelve billion, ten million, two hundred twenty-one thousand, one hundred twenty-one".