1200111221170 has 32 divisors (see below), whose sum is σ = 2218742641728. Its totient is φ = 467036912448.

The previous prime is 1200111221123. The next prime is 1200111221171. The reversal of 1200111221170 is 711221110021.

It is not an unprimeable number, because it can be changed into a prime (1200111221171) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5421889 + ... + 5638891.

It is an arithmetic number, because the mean of its divisors is an integer number (69335707554).

Almost surely, 2^{1200111221170} is an apocalyptic number.

1200111221170 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1200111221170 is a deficient number, since it is larger than the sum of its proper divisors (1018631420558).

1200111221170 is a wasteful number, since it uses less digits than its factorization.

1200111221170 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 231994.

The product of its (nonzero) digits is 56, while the sum is 19.

Adding to 1200111221170 its reverse (711221110021), we get a palindrome (1911332331191).

The spelling of 1200111221170 in words is "one trillion, two hundred billion, one hundred eleven million, two hundred twenty-one thousand, one hundred seventy".