1211211244723 has 2 divisors, whose sum is σ = 1211211244724. Its totient is φ = 1211211244722.

The previous prime is 1211211244703. The next prime is 1211211244829. The reversal of 1211211244723 is 3274421121121.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1211211244723 is a prime.

It is a super-4 number, since 4×1211211244723⁴ (a number of 49 digits) contains 4444 as substring.

It is not a weakly prime, because it can be changed into another prime (1211211244703) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 605605622361 + 605605622362.

It is an arithmetic number, because the mean of its divisors is an integer number (605605622362).

Almost surely, 2^{1211211244723} is an apocalyptic number.

1211211244723 is a deficient number, since it is larger than the sum of its proper divisors (1).

1211211244723 is an equidigital number, since it uses as much as digits as its factorization.

1211211244723 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 5376, while the sum is 31.

Adding to 1211211244723 its reverse (3274421121121), we get a palindrome (4485632365844).

The spelling of 1211211244723 in words is "one trillion, two hundred eleven billion, two hundred eleven million, two hundred forty-four thousand, seven hundred twenty-three".