1210421421103 has 2 divisors, whose sum is σ = 1210421421104. Its totient is φ = 1210421421102.

The previous prime is 1210421421101. The next prime is 1210421421161. The reversal of 1210421421103 is 3011241240121.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1210421421103 - 2¹ = 1210421421101 is a prime.

Together with 1210421421101, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1210421421101) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 605210710551 + 605210710552.

It is an arithmetic number, because the mean of its divisors is an integer number (605210710552).

Almost surely, 2^{1210421421103} is an apocalyptic number.

1210421421103 is a deficient number, since it is larger than the sum of its proper divisors (1).

1210421421103 is an equidigital number, since it uses as much as digits as its factorization.

1210421421103 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 1210421421103 its reverse (3011241240121), we get a palindrome (4221662661224).

The spelling of 1210421421103 in words is "one trillion, two hundred ten billion, four hundred twenty-one million, four hundred twenty-one thousand, one hundred three".