220102200221221 has 4 divisors (see below), whose sum is σ = 220106902201344. Its totient is φ = 220097498241100.

The previous prime is 220102200221207. The next prime is 220102200221273. The reversal of 220102200221221 is 122122002201022.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-220102200221221 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (220102200221021) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2350919845 + ... + 2351013466.

It is an arithmetic number, because the mean of its divisors is an integer number (55026725550336).

Almost surely, 2^{220102200221221} is an apocalyptic number.

It is an amenable number.

220102200221221 is a deficient number, since it is larger than the sum of its proper divisors (4701980123).

220102200221221 is an equidigital number, since it uses as much as digits as its factorization.

220102200221221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4701980122.

The product of its (nonzero) digits is 256, while the sum is 19.

Adding to 220102200221221 its reverse (122122002201022), we get a palindrome (342224202422243).

The spelling of 220102200221221 in words is "two hundred twenty trillion, one hundred two billion, two hundred million, two hundred twenty-one thousand, two hundred twenty-one".