221000002211 has 8 divisors (see below), whose sum is σ = 222368118960. Its totient is φ = 219635988768.

The previous prime is 221000002183. The next prime is 221000002219. The reversal of 221000002211 is 112200000122.

It is a happy number.

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 221000002211 - 2²⁶ = 220932893347 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 221000002192 and 221000002201.

It is not an unprimeable number, because it can be changed into a prime (221000002219) 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, 917741 + ... + 1133246.

It is an arithmetic number, because the mean of its divisors is an integer number (27796014870).

Almost surely, 2^221000002211 is an apocalyptic number.

221000002211 is a deficient number, since it is larger than the sum of its proper divisors (1368116749).

221000002211 is a wasteful number, since it uses less digits than its factorization.

221000002211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2051653.

The product of its (nonzero) digits is 16, while the sum is 11.

Adding to 221000002211 its reverse (112200000122), we get a palindrome (333200002333).

The spelling of 221000002211 in words is "two hundred twenty-one billion, two thousand, two hundred eleven".