102220101221 has 8 divisors (see below), whose sum is σ = 121902232704. Its totient is φ = 83807784720.

The previous prime is 102220101211. The next prime is 102220101253. The reversal of 102220101221 is 122101022201.

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 102220101221 - 2⁶ = 102220101157 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 102220101196 and 102220101205.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (102220101211) 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, 317453570 + ... + 317453891.

It is an arithmetic number, because the mean of its divisors is an integer number (15237779088).

Almost surely, 2^102220101221 is an apocalyptic number.

It is an amenable number.

102220101221 is a deficient number, since it is larger than the sum of its proper divisors (19682131483).

102220101221 is an equidigital number, since it uses as much as digits as its factorization.

102220101221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 634907491.

The product of its (nonzero) digits is 32, while the sum is 14.

Adding to 102220101221 its reverse (122101022201), we get a palindrome (224321123422).

The spelling of 102220101221 in words is "one hundred two billion, two hundred twenty million, one hundred one thousand, two hundred twenty-one".