102022231221 has 24 divisors (see below), whose sum is σ = 148956986880. Its totient is φ = 67284205056.

The previous prime is 102022231219. The next prime is 102022231231. The reversal of 102022231221 is 122132220201.

102022231221 is a `hidden beast` number, since 10 + 202 + 2 + 231 + 221 = 666.

It is not a de Polignac number, because 102022231221 - 2¹ = 102022231219 is a prime.

It is a super-2 number, since 2×102022231221² (a number of 23 digits) contains 22 as substring.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 102022231194 and 102022231203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (102022231211) 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 23 ways as a sum of consecutive naturals, for example, 146860 + ... + 474986.

It is an arithmetic number, because the mean of its divisors is an integer number (6206541120).

Almost surely, 2^102022231221 is an apocalyptic number.

It is an amenable number.

102022231221 is a deficient number, since it is larger than the sum of its proper divisors (46934755659).

102022231221 is a wasteful number, since it uses less digits than its factorization.

102022231221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 328505 (or 328502 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 18.

Adding to 102022231221 its reverse (122132220201), we get a palindrome (224154451422).

The spelling of 102022231221 in words is "one hundred two billion, twenty-two million, two hundred thirty-one thousand, two hundred twenty-one".