121222110110212 has 6 divisors (see below), whose sum is σ = 212138692692878. Its totient is φ = 60611055055104.

The previous prime is 121222110110183. The next prime is 121222110110357. The reversal of 121222110110212 is 212011011222121.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 117202622432256 + 4019487677956 = 10826016^2 + 2004866^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 121222110110212.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15152763763773 + ... + 15152763763780.

Almost surely, 2^{121222110110212} is an apocalyptic number.

It is an amenable number.

121222110110212 is a deficient number, since it is larger than the sum of its proper divisors (90916582582666).

121222110110212 is a wasteful number, since it uses less digits than its factorization.

121222110110212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30305527527557 (or 30305527527555 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 19.

Adding to 121222110110212 its reverse (212011011222121), we get a palindrome (333233121332333).

The spelling of 121222110110212 in words is "one hundred twenty-one trillion, two hundred twenty-two billion, one hundred ten million, one hundred ten thousand, two hundred twelve".