212211110200021 has 8 divisors (see below), whose sum is σ = 212903030206944. Its totient is φ = 211519194600240.

The previous prime is 212211110199953. The next prime is 212211110200039. The reversal of 212211110200021 is 120002011112212.

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

It is a cyclic number.

It is not a de Polignac number, because 212211110200021 - 2²⁷ = 212210975982293 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 212211110199968 and 212211110200004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212211110200051) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 115407966 + ... + 117232336.

It is an arithmetic number, because the mean of its divisors is an integer number (26612878775868).

Almost surely, 2^{212211110200021} is an apocalyptic number.

It is an amenable number.

212211110200021 is a deficient number, since it is larger than the sum of its proper divisors (691920006923).

212211110200021 is a wasteful number, since it uses less digits than its factorization.

212211110200021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2203571.

The product of its (nonzero) digits is 32, while the sum is 16.

Adding to 212211110200021 its reverse (120002011112212), we get a palindrome (332213121312233).

The spelling of 212211110200021 in words is "two hundred twelve trillion, two hundred eleven billion, one hundred ten million, two hundred thousand, twenty-one".