210222000221 has 8 divisors (see below), whose sum is σ = 222620074560. Its totient is φ = 197827489728.

The previous prime is 210222000203. The next prime is 210222000293. The reversal of 210222000221 is 122000222012.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-210222000221 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 210222000196 and 210222000205.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (210221000221) 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, 769031 + ... + 1005908.

It is an arithmetic number, because the mean of its divisors is an integer number (27827509320).

Almost surely, 2^210222000221 is an apocalyptic number.

It is an amenable number.

210222000221 is a deficient number, since it is larger than the sum of its proper divisors (12398074339).

210222000221 is a wasteful number, since it uses less digits than its factorization.

210222000221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1781923.

The product of its (nonzero) digits is 64, while the sum is 14.

Adding to 210222000221 its reverse (122000222012), we get a palindrome (332222222233).

The spelling of 210222000221 in words is "two hundred ten billion, two hundred twenty-two million, two hundred twenty-one", and thus it is an aban number.