1212021112243 has 2 divisors, whose sum is σ = 1212021112244. Its totient is φ = 1212021112242.

The previous prime is 1212021112201. The next prime is 1212021112271. The reversal of 1212021112243 is 3422111202121.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1212021112243 is a prime.

It is not a weakly prime, because it can be changed into another prime (1212021112943) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 606010556121 + 606010556122.

It is an arithmetic number, because the mean of its divisors is an integer number (606010556122).

Almost surely, 2^{1212021112243} is an apocalyptic number.

1212021112243 is a deficient number, since it is larger than the sum of its proper divisors (1).

1212021112243 is an equidigital number, since it uses as much as digits as its factorization.

1212021112243 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 384, while the sum is 22.

Adding to 1212021112243 its reverse (3422111202121), we get a palindrome (4634132314364).

The spelling of 1212021112243 in words is "one trillion, two hundred twelve billion, twenty-one million, one hundred twelve thousand, two hundred forty-three".