1200100211121 has 8 divisors (see below), whose sum is σ = 1828724131264. Its totient is φ = 685771549200.

The previous prime is 1200100211033. The next prime is 1200100211131. The reversal of 1200100211121 is 1211120010021.

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

It is not a de Polignac number, because 1200100211121 - 2¹⁹ = 1200099686833 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1200100211097 and 1200100211106.

It is not an unprimeable number, because it can be changed into a prime (1200100211131) 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, 28573814530 + ... + 28573814571.

It is an arithmetic number, because the mean of its divisors is an integer number (228590516408).

Almost surely, 2^{1200100211121} is an apocalyptic number.

It is an amenable number.

1200100211121 is a deficient number, since it is larger than the sum of its proper divisors (628623920143).

1200100211121 is an equidigital number, since it uses as much as digits as its factorization.

1200100211121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 57147629111.

The product of its (nonzero) digits is 8, while the sum is 12.

Adding to 1200100211121 its reverse (1211120010021), we get a palindrome (2411220221142).

The spelling of 1200100211121 in words is "one trillion, two hundred billion, one hundred million, two hundred eleven thousand, one hundred twenty-one".