1210121303243 has 2 divisors, whose sum is σ = 1210121303244. Its totient is φ = 1210121303242.

The previous prime is 1210121303221. The next prime is 1210121303249. The reversal of 1210121303243 is 3423031210121.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1210121303243 - 2⁸ = 1210121302987 is a prime.

It is not a weakly prime, because it can be changed into another prime (1210121303249) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 605060651621 + 605060651622.

It is an arithmetic number, because the mean of its divisors is an integer number (605060651622).

Almost surely, 2^{1210121303243} is an apocalyptic number.

1210121303243 is a deficient number, since it is larger than the sum of its proper divisors (1).

1210121303243 is an equidigital number, since it uses as much as digits as its factorization.

1210121303243 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 864, while the sum is 23.

Adding to 1210121303243 its reverse (3423031210121), we get a palindrome (4633152513364).

The spelling of 1210121303243 in words is "one trillion, two hundred ten billion, one hundred twenty-one million, three hundred three thousand, two hundred forty-three".