1212211130113 has 4 divisors (see below), whose sum is σ = 1254011513940. Its totient is φ = 1170410746288.

The previous prime is 1212211130083. The next prime is 1212211130147. The reversal of 1212211130113 is 3110311122121.

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 764694283024 + 447516847089 = 874468^2 + 668967^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1212211130113 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1212211130213) 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, 20900191870 + ... + 20900191927.

It is an arithmetic number, because the mean of its divisors is an integer number (313502878485).

Almost surely, 2^{1212211130113} is an apocalyptic number.

It is an amenable number.

1212211130113 is a deficient number, since it is larger than the sum of its proper divisors (41800383827).

1212211130113 is an equidigital number, since it uses as much as digits as its factorization.

1212211130113 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41800383826.

The product of its (nonzero) digits is 72, while the sum is 19.

Adding to 1212211130113 its reverse (3110311122121), we get a palindrome (4322522252234).

The spelling of 1212211130113 in words is "one trillion, two hundred twelve billion, two hundred eleven million, one hundred thirty thousand, one hundred thirteen".