1200220112122 has 32 divisors (see below), whose sum is σ = 1972095368400. Its totient is φ = 545296969728.

The previous prime is 1200220112107. The next prime is 1200220112131. The reversal of 1200220112122 is 2212110220021.

It is a happy number.

It can be written as a sum of positive squares in 8 ways, for example, as 147710317561 + 1052509794561 = 384331^2 + 1025919^2 .

It is a junction number, because it is equal to n+sod(n) for n = 1200220112096 and 1200220112105.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 19603654 + ... + 19664782.

Almost surely, 2^{1200220112122} is an apocalyptic number.

1200220112122 is a deficient number, since it is larger than the sum of its proper divisors (771875256278).

1200220112122 is a wasteful number, since it uses less digits than its factorization.

1200220112122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 81090.

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

Adding to 1200220112122 its reverse (2212110220021), we get a palindrome (3412330332143).

The spelling of 1200220112122 in words is "one trillion, two hundred billion, two hundred twenty million, one hundred twelve thousand, one hundred twenty-two".