212000001110021 has 16 divisors (see below), whose sum is σ = 213936510074880. Its totient is φ = 210067709932080.

The previous prime is 212000001110011. The next prime is 212000001110033. The reversal of 212000001110021 is 120011100000212.

It is a cyclic number.

It is not a de Polignac number, because 212000001110021 - 2¹⁰ = 212000001108997 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 212000001109984 and 212000001110011.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212000001110011) 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, 1364784860 + ... + 1364940186.

It is an arithmetic number, because the mean of its divisors is an integer number (13371031879680).

Almost surely, 2^{212000001110021} is an apocalyptic number.

It is an amenable number.

212000001110021 is a deficient number, since it is larger than the sum of its proper divisors (1936508964859).

212000001110021 is a wasteful number, since it uses less digits than its factorization.

212000001110021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 168824.

The product of its (nonzero) digits is 8, while the sum is 11.

Adding to 212000001110021 its reverse (120011100000212), we get a palindrome (332011101110233).

The spelling of 212000001110021 in words is "two hundred twelve trillion, one million, one hundred ten thousand, twenty-one".