Adding to 1012021222 its reverse (2221202101), we get a palindrome (3233223323).
It is a happy number.
It is a semiprime because it is the product of two primes.
It is a congruent number.
It is an unprimeable number.
Almost surely, 21012021222 is an apocalyptic number.
1012021222 is an equidigital number, since it uses as much as digits as its factorization.
1012021222 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 506010613.
The square root of 1012021222 is about 31812.2809933522. The cubic root of 1012021222 is about 1003.9911237397.
The spelling of 1012021222 in words is "one billion, twelve million, twenty-one thousand, two hundred twenty-two".