121122200212 has 24 divisors (see below), whose sum is σ = 229635657216. Its totient is φ = 55567804128.

The previous prime is 121122200207. The next prime is 121122200267. The reversal of 121122200212 is 212002221121.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6965188 + ... + 6982555.

It is an arithmetic number, because the mean of its divisors is an integer number (9568152384).

Almost surely, 2^121122200212 is an apocalyptic number.

It is an amenable number.

121122200212 is a deficient number, since it is larger than the sum of its proper divisors (108513457004).

121122200212 is a wasteful number, since it uses less digits than its factorization.

121122200212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13947927 (or 13947925 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 121122200212 its reverse (212002221121), we get a palindrome (333124421333).

The spelling of 121122200212 in words is "one hundred twenty-one billion, one hundred twenty-two million, two hundred thousand, two hundred twelve".