102221220211221 has 16 divisors (see below), whose sum is σ = 140719121328128. Its totient is φ = 65936260537200.

The previous prime is 102221220211199. The next prime is 102221220211223. The reversal of 102221220211221 is 122112022122201.

102221220211221 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 102221220211221 - 2⁹ = 102221220210709 is a prime.

It is a super-2 number, since 2×102221220211221² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (102221220211223) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 107137435 + ... + 108087336.

It is an arithmetic number, because the mean of its divisors is an integer number (8794945083008).

Almost surely, 2^{102221220211221} is an apocalyptic number.

It is an amenable number.

102221220211221 is a deficient number, since it is larger than the sum of its proper divisors (38497901116907).

102221220211221 is a wasteful number, since it uses less digits than its factorization.

102221220211221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 215229912.

The product of its (nonzero) digits is 256, while the sum is 21.

Adding to 102221220211221 its reverse (122112022122201), we get a palindrome (224333242333422).

The spelling of 102221220211221 in words is "one hundred two trillion, two hundred twenty-one billion, two hundred twenty million, two hundred eleven thousand, two hundred twenty-one".