21121202 is an apocalyptic number.
It is a practical number, because each smaller number is the sum of distinct divisors of 1121202, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1262415).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
1121202 is an frugal number, since it uses more digits than its factorization.
1121202 is an evil number, because the sum of its binary digits is even.
The square root of 1121202 is about 1058.8682637609. The cubic root of 1121202 is about 103.8870198136.
Adding to 1121202 its reverse (2021211), we get a palindrome (3142413).
Subtracting 1121202 from its reverse (2021211), we obtain a palindrome (900009).
The spelling of 1121202 in words is "one million, one hundred twenty-one thousand, two hundred two".