212101000002221 has 8 divisors (see below), whose sum is σ = 232283231699904. Its totient is φ = 192068822072320.

The previous prime is 212101000002209. The next prime is 212101000002247. The reversal of 212101000002221 is 122200000101212.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 212101000002221 - 2¹⁴ = 212100999985837 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 212101000002196 and 212101000002205.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212101000002821) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 37513438985 + ... + 37513444638.

It is an arithmetic number, because the mean of its divisors is an integer number (29035403962488).

Almost surely, 2^{212101000002221} is an apocalyptic number.

It is an amenable number.

212101000002221 is a deficient number, since it is larger than the sum of its proper divisors (20182231697683).

212101000002221 is a wasteful number, since it uses less digits than its factorization.

212101000002221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 75026883891.

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

Adding to 212101000002221 its reverse (122200000101212), we get a palindrome (334301000103433).

The spelling of 212101000002221 in words is "two hundred twelve trillion, one hundred one billion, two thousand, two hundred twenty-one".