212021220110201 has 4 divisors (see below), whose sum is σ = 212021250769152. Its totient is φ = 212021189451252.

The previous prime is 212021220110123. The next prime is 212021220110233. The reversal of 212021220110201 is 102011022120212.

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, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 212021220110201 - 2¹⁰ = 212021220109177 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 212021220110201.

It is not an unprimeable number, because it can be changed into a prime (212021220110261) 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, 475436 + ... + 20597778.

It is an arithmetic number, because the mean of its divisors is an integer number (53005312692288).

Almost surely, 2^{212021220110201} is an apocalyptic number.

It is an amenable number.

212021220110201 is a deficient number, since it is larger than the sum of its proper divisors (30658951).

212021220110201 is a wasteful number, since it uses less digits than its factorization.

212021220110201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30658950.

The product of its (nonzero) digits is 64, while the sum is 17.

Adding to 212021220110201 its reverse (102011022120212), we get a palindrome (314032242230413).

The spelling of 212021220110201 in words is "two hundred twelve trillion, twenty-one billion, two hundred twenty million, one hundred ten thousand, two hundred one".