212000200222221 has 6 divisors (see below), whose sum is σ = 306222511432110. Its totient is φ = 141333466814808.

The previous prime is 212000200222211. The next prime is 212000200222333. The reversal of 212000200222221 is 122222002000212.

212000200222221 is a `hidden beast` number, since 2 + 1 + 20 + 0 + 0 + 200 + 222 + 221 = 666.

It can be written as a sum of positive squares in only one way, i.e., 209704747966596 + 2295452255625 = 14481186^2 + 1515075^2 .

It is not a de Polignac number, because 212000200222221 - 2⁵ = 212000200222189 is a prime.

It is a super-3 number, since 3×212000200222221³ (a number of 44 digits) contains 333 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 212000200222194 and 212000200222203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212000200222211) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 11777788901226 + ... + 11777788901243.

It is an arithmetic number, because the mean of its divisors is an integer number (51037085238685).

Almost surely, 2^{212000200222221} is an apocalyptic number.

It is an amenable number.

212000200222221 is a deficient number, since it is larger than the sum of its proper divisors (94222311209889).

212000200222221 is a wasteful number, since it uses less digits than its factorization.

212000200222221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23555577802475 (or 23555577802472 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 18.

Adding to 212000200222221 its reverse (122222002000212), we get a palindrome (334222202222433).

The spelling of 212000200222221 in words is "two hundred twelve trillion, two hundred million, two hundred twenty-two thousand, two hundred twenty-one".