1200012211222 has 16 divisors (see below), whose sum is σ = 1983098491344. Its totient is φ = 540059500000.

The previous prime is 1200012211219. The next prime is 1200012211231. The reversal of 1200012211222 is 2221122100021.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 1200012211196 and 1200012211205.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 270027529 + ... + 270031972.

It is an arithmetic number, because the mean of its divisors is an integer number (123943655709).

Almost surely, 2^{1200012211222} is an apocalyptic number.

1200012211222 is a deficient number, since it is larger than the sum of its proper divisors (783086280122).

1200012211222 is a wasteful number, since it uses less digits than its factorization.

1200012211222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 540059615.

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

Adding to 1200012211222 its reverse (2221122100021), we get a palindrome (3421134311243).

The spelling of 1200012211222 in words is "one trillion, two hundred billion, twelve million, two hundred eleven thousand, two hundred twenty-two".