212201102021 has 4 divisors (see below), whose sum is σ = 214887192000. Its totient is φ = 209515012044.

The previous prime is 212201102017. The next prime is 212201102053. The reversal of 212201102021 is 120201102212.

212201102021 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 212201102021 - 2² = 212201102017 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 212201101987 and 212201102005.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212201102081) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1343044871 + ... + 1343045028.

It is an arithmetic number, because the mean of its divisors is an integer number (53721798000).

Almost surely, 2^212201102021 is an apocalyptic number.

It is an amenable number.

212201102021 is a deficient number, since it is larger than the sum of its proper divisors (2686089979).

212201102021 is an equidigital number, since it uses as much as digits as its factorization.

212201102021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2686089978.

The product of its (nonzero) digits is 32, while the sum is 14.

Adding to 212201102021 its reverse (120201102212), we get a palindrome (332402204233).

The spelling of 212201102021 in words is "two hundred twelve billion, two hundred one million, one hundred two thousand, twenty-one".