212021002201 has 4 divisors (see below), whose sum is σ = 212028062004. Its totient is φ = 212013942400.

The previous prime is 212021002187. The next prime is 212021002211. The reversal of 212021002201 is 102200120212.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 182285448601 + 29735553600 = 426949^2 + 172440^2 .

It is a cyclic number.

It is not a de Polignac number, because 212021002201 - 2¹⁷ = 212020871129 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (212021002211) 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, 3484660 + ... + 3544981.

It is an arithmetic number, because the mean of its divisors is an integer number (53007015501).

Almost surely, 2^212021002201 is an apocalyptic number.

It is an amenable number.

212021002201 is a deficient number, since it is larger than the sum of its proper divisors (7059803).

212021002201 is an equidigital number, since it uses as much as digits as its factorization.

212021002201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7059802.

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

Adding to 212021002201 its reverse (102200120212), we get a palindrome (314221122413).

The spelling of 212021002201 in words is "two hundred twelve billion, twenty-one million, two thousand, two hundred one".