212100221301 has 4 divisors (see below), whose sum is σ = 282800295072. Its totient is φ = 141400147532.

The previous prime is 212100221293. The next prime is 212100221323. The reversal of 212100221301 is 103122001212.

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 212100221301 - 2³ = 212100221293 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212100221101) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 35350036881 + ... + 35350036886.

It is an arithmetic number, because the mean of its divisors is an integer number (70700073768).

Almost surely, 2^212100221301 is an apocalyptic number.

It is an amenable number.

212100221301 is a deficient number, since it is larger than the sum of its proper divisors (70700073771).

212100221301 is an equidigital number, since it uses as much as digits as its factorization.

212100221301 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 70700073770.

The product of its (nonzero) digits is 48, while the sum is 15.

Adding to 212100221301 its reverse (103122001212), we get a palindrome (315222222513).

The spelling of 212100221301 in words is "two hundred twelve billion, one hundred million, two hundred twenty-one thousand, three hundred one".