220210001221 has 8 divisors (see below), whose sum is σ = 253059008384. Its totient is φ = 187708602960.

The previous prime is 220210001203. The next prime is 220210001257. The reversal of 220210001221 is 122100012022.

It is a happy number.

220210001221 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 220210001221 - 2⁵ = 220210001189 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (220210001201) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 86900865 + ... + 86903398.

It is an arithmetic number, because the mean of its divisors is an integer number (31632376048).

Almost surely, 2^220210001221 is an apocalyptic number.

It is an amenable number.

220210001221 is a deficient number, since it is larger than the sum of its proper divisors (32849007163).

220210001221 is a wasteful number, since it uses less digits than its factorization.

220210001221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 173804451.

The product of its (nonzero) digits is 32, while the sum is 13.

Adding to 220210001221 its reverse (122100012022), we get a palindrome (342310013243).

The spelling of 220210001221 in words is "two hundred twenty billion, two hundred ten million, one thousand, two hundred twenty-one".