1200211212113 has 4 divisors (see below), whose sum is σ = 1216652461668. Its totient is φ = 1183769962560.

The previous prime is 1200211212091. The next prime is 1200211212133. The reversal of 1200211212113 is 3112121120021.

It is a happy number.

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

It can be written as a sum of positive squares in 2 ways, for example, as 386477318929 + 813733893184 = 621673^2 + 902072^2 .

It is a cyclic number.

It is not a de Polignac number, because 1200211212113 - 2¹² = 1200211208017 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 1200211212091 and 1200211212100.

It is not an unprimeable number, because it can be changed into a prime (1200211212133) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8220624668 + ... + 8220624813.

It is an arithmetic number, because the mean of its divisors is an integer number (304163115417).

Almost surely, 2^{1200211212113} is an apocalyptic number.

It is an amenable number.

1200211212113 is a deficient number, since it is larger than the sum of its proper divisors (16441249555).

1200211212113 is an equidigital number, since it uses as much as digits as its factorization.

1200211212113 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16441249554.

The product of its (nonzero) digits is 48, while the sum is 17.

Adding to 1200211212113 its reverse (3112121120021), we get a palindrome (4312332332134).

The spelling of 1200211212113 in words is "one trillion, two hundred billion, two hundred eleven million, two hundred twelve thousand, one hundred thirteen".