102102011220 has 192 divisors, whose sum is σ = 331458220800. Its totient is φ = 23208714240.

The previous prime is 102102011161. The next prime is 102102011227. The reversal of 102102011220 is 22110201201.

It is a Harshad number since it is a multiple of its sum of digits (12).

It is a junction number, because it is equal to n+sod(n) for n = 102102011196 and 102102011205.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (102102011227) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 3001266 + ... + 3035094.

It is an arithmetic number, because the mean of its divisors is an integer number (1726344900).

Almost surely, 2^102102011220 is an apocalyptic number.

102102011220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 102102011220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (165729110400).

102102011220 is an abundant number, since it is smaller than the sum of its proper divisors (229356209580).

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

102102011220 is a wasteful number, since it uses less digits than its factorization.

102102011220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34138 (or 34136 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 12.

Adding to 102102011220 its reverse (22110201201), we get a palindrome (124212212421).

The spelling of 102102011220 in words is "one hundred two billion, one hundred two million, eleven thousand, two hundred twenty".