1200113213122 has 4 divisors (see below), whose sum is σ = 1800169819686. Its totient is φ = 600056606560.

The previous prime is 1200113213081. The next prime is 1200113213149. The reversal of 1200113213122 is 2213123110021.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 1134393276241 + 65719936881 = 1065079^2 + 256359^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 1200113213122.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 300028303279 + ... + 300028303282.

Almost surely, 2^{1200113213122} is an apocalyptic number.

1200113213122 is a deficient number, since it is larger than the sum of its proper divisors (600056606564).

1200113213122 is an equidigital number, since it uses as much as digits as its factorization.

1200113213122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 600056606563.

The product of its (nonzero) digits is 144, while the sum is 19.

Adding to 1200113213122 its reverse (2213123110021), we get a palindrome (3413236323143).

The spelling of 1200113213122 in words is "one trillion, two hundred billion, one hundred thirteen million, two hundred thirteen thousand, one hundred twenty-two".