102021232221220 has 48 divisors (see below), whose sum is σ = 230726450853360. Its totient is φ = 37669131472896.

The previous prime is 102021232221203. The next prime is 102021232221229. The reversal of 102021232221220 is 22122232120201.

It is a happy number.

102021232221220 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 8 ways, for example, as 26118559439424 + 75902672781796 = 5110632^2 + 8712214^2 .

It is a junction number, because it is equal to n+sod(n) for n = 102021232221191 and 102021232221200.

It is not an unprimeable number, because it can be changed into a prime (102021232221229) 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 15 ways as a sum of consecutive naturals, for example, 41210844 + ... + 43616236.

It is an arithmetic number, because the mean of its divisors is an integer number (4806801059445).

Almost surely, 2^{102021232221220} is an apocalyptic number.

102021232221220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

102021232221220 is an abundant number, since it is smaller than the sum of its proper divisors (128705218632140).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

102021232221220 is a wasteful number, since it uses less digits than its factorization.

102021232221220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2568544 (or 2568542 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 22.

Adding to 102021232221220 its reverse (22122232120201), we get a palindrome (124143464341421).

The spelling of 102021232221220 in words is "one hundred two trillion, twenty-one billion, two hundred thirty-two million, two hundred twenty-one thousand, two hundred twenty".