212210200021 has 8 divisors (see below), whose sum is σ = 215791884000. Its totient is φ = 208658239920.

The previous prime is 212210200019. The next prime is 212210200061. The reversal of 212210200021 is 120002012212.

It is a happy number.

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 212210200021 - 2¹ = 212210200019 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 212210199974 and 212210200010.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212210200061) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7416571 + ... + 7445128.

It is an arithmetic number, because the mean of its divisors is an integer number (26973985500).

Almost surely, 2^212210200021 is an apocalyptic number.

It is an amenable number.

212210200021 is a deficient number, since it is larger than the sum of its proper divisors (3581683979).

212210200021 is a wasteful number, since it uses less digits than its factorization.

212210200021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14861939.

The product of its (nonzero) digits is 32, while the sum is 13.

Adding to 212210200021 its reverse (120002012212), we get a palindrome (332212212233).

The spelling of 212210200021 in words is "two hundred twelve billion, two hundred ten million, two hundred thousand, twenty-one".