1200000221212 has 12 divisors (see below), whose sum is σ = 2261538878536. Its totient is φ = 553846255920.

The previous prime is 1200000221191. The next prime is 1200000221213. The reversal of 1200000221212 is 2121220000021.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (13).

It is a junction number, because it is equal to n+sod(n) for n = 1200000221192 and 1200000221201.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1200000221213) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 11538463614 + ... + 11538463717.

Almost surely, 2^{1200000221212} is an apocalyptic number.

It is an amenable number.

1200000221212 is a deficient number, since it is larger than the sum of its proper divisors (1061538657324).

1200000221212 is a wasteful number, since it uses less digits than its factorization.

1200000221212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23076927348 (or 23076927346 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 13.

Adding to 1200000221212 its reverse (2121220000021), we get a palindrome (3321220221233).

The spelling of 1200000221212 in words is "one trillion, two hundred billion, two hundred twenty-one thousand, two hundred twelve".