212200021021 has 8 divisors (see below), whose sum is σ = 223627288320. Its totient is φ = 200798638272.

The previous prime is 212200021001. The next prime is 212200021139. The reversal of 212200021021 is 120120002212.

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 212200021021 - 2⁹ = 212200020509 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 212200020992 and 212200021010.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212200021001) 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, 6454300 + ... + 6487093.

It is an arithmetic number, because the mean of its divisors is an integer number (27953411040).

Almost surely, 2^212200021021 is an apocalyptic number.

It is an amenable number.

212200021021 is a deficient number, since it is larger than the sum of its proper divisors (11427267299).

212200021021 is a wasteful number, since it uses less digits than its factorization.

212200021021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12942275.

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

Adding to 212200021021 its reverse (120120002212), we get a palindrome (332320023233).

The spelling of 212200021021 in words is "two hundred twelve billion, two hundred million, twenty-one thousand, twenty-one".