Adding to 102120020 its reverse (20021201), we get a palindrome (122141221).
It is a congruent number.
It is an unprimeable number.
Almost surely, 2102120020 is an apocalyptic number.
102120020 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 102120020, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (117459720).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
102120020 is a wasteful number, since it uses less digits than its factorization.
102120020 is an evil number, because the sum of its binary digits is even.
The square root of 102120020 is about 10105.4450668934. The cubic root of 102120020 is about 467.4160601199.
The spelling of 102120020 in words is "one hundred two million, one hundred twenty thousand, twenty".