1200222121120 has 96 divisors (see below), whose sum is σ = 3093615395136. Its totient is φ = 436399872000.

The previous prime is 1200222121069. The next prime is 1200222121121. The reversal of 1200222121120 is 211212220021.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (16).

It is a junction number, because it is equal to n+sod(n) for n = 1200222121094 and 1200222121103.

It is not an unprimeable number, because it can be changed into a prime (1200222121121) 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 15 ways as a sum of consecutive naturals, for example, 20740867 + ... + 20798653.

It is an arithmetic number, because the mean of its divisors is an integer number (32225160366).

Almost surely, 2^{1200222121120} is an apocalyptic number.

1200222121120 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1200222121120 is an abundant number, since it is smaller than the sum of its proper divisors (1893393274016).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1200222121120 is a wasteful number, since it uses less digits than its factorization.

1200222121120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 69614 (or 69606 counting only the distinct ones).

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

Adding to 1200222121120 its reverse (211212220021), we get a palindrome (1411434341141).

It can be divided in two parts, 12002 and 22121120, that added together give a palindrome (22133122).

The spelling of 1200222121120 in words is "one trillion, two hundred billion, two hundred twenty-two million, one hundred twenty-one thousand, one hundred twenty".