212211000022201 has 4 divisors (see below), whose sum is σ = 212211145830004. Its totient is φ = 212210854214400.

The previous prime is 212211000022181. The next prime is 212211000022283. The reversal of 212211000022201 is 102220000112212.

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 195941232405801 + 16269767616400 = 13997901^2 + 4033580^2 .

It is a cyclic number.

It is not a de Polignac number, because 212211000022201 - 2⁹ = 212211000021689 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (212211000022001) 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, 70698540 + ... + 73639021.

It is an arithmetic number, because the mean of its divisors is an integer number (53052786457501).

Almost surely, 2^{212211000022201} is an apocalyptic number.

It is an amenable number.

212211000022201 is a deficient number, since it is larger than the sum of its proper divisors (145807803).

212211000022201 is a wasteful number, since it uses less digits than its factorization.

212211000022201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 145807802.

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 212211000022201 its reverse (102220000112212), we get a palindrome (314431000134413).

The spelling of 212211000022201 in words is "two hundred twelve trillion, two hundred eleven billion, twenty-two thousand, two hundred one".