1200200001121 has 8 divisors (see below), whose sum is σ = 1309317973344. Its totient is φ = 1091083509120.

The previous prime is 1200200001107. The next prime is 1200200001131. The reversal of 1200200001121 is 1211000020021.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1200200001121 - 2¹¹ = 1200199999073 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1200200001098 and 1200200001107.

It is not an unprimeable number, because it can be changed into a prime (1200200001101) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1967130 + ... + 2503996.

It is an arithmetic number, because the mean of its divisors is an integer number (163664746668).

Almost surely, 2^{1200200001121} is an apocalyptic number.

1200200001121 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

1200200001121 is a deficient number, since it is larger than the sum of its proper divisors (109117972223).

1200200001121 is a wasteful number, since it uses less digits than its factorization.

1200200001121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 740111.

The product of its (nonzero) digits is 8, while the sum is 10.

Adding to 1200200001121 its reverse (1211000020021), we get a palindrome (2411200021142).

The spelling of 1200200001121 in words is "one trillion, two hundred billion, two hundred million, one thousand, one hundred twenty-one".