Adding to 220121102 its reverse (201121022), we get a palindrome (421242124).
It is a happy number.
It is a sphenic number, since it is the product of 3 distinct primes.
It is a congruent number.
It is an unprimeable number.
Almost surely, 2220121102 is an apocalyptic number.
220121102 is a wasteful number, since it uses less digits than its factorization.
220121102 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 558882.
The square root of 220121102 is about 14836.4787601371. The cubic root of 220121102 is about 603.7918215210.
The spelling of 220121102 in words is "two hundred twenty million, one hundred twenty-one thousand, one hundred two".