102222220101221 has 32 divisors (see below), whose sum is σ = 117519466346496. Its totient is φ = 88006015240000.

The previous prime is 102222220101109. The next prime is 102222220101223. The reversal of 102222220101221 is 122101022222201.

It is not a de Polignac number, because 102222220101221 - 2⁴⁶ = 31853475923557 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 102222220101193 and 102222220101202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (102222220101223) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1575744416 + ... + 1575809286.

It is an arithmetic number, because the mean of its divisors is an integer number (3672483323328).

Almost surely, 2^{102222220101221} is an apocalyptic number.

102222220101221 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

102222220101221 is a deficient number, since it is larger than the sum of its proper divisors (15297246245275).

102222220101221 is a wasteful number, since it uses less digits than its factorization.

102222220101221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 126673.

The product of its (nonzero) digits is 256, while the sum is 20.

Adding to 102222220101221 its reverse (122101022222201), we get a palindrome (224323242323422).

The spelling of 102222220101221 in words is "one hundred two trillion, two hundred twenty-two billion, two hundred twenty million, one hundred one thousand, two hundred twenty-one".