1201421111203 has 2 divisors, whose sum is σ = 1201421111204. Its totient is φ = 1201421111202.

The previous prime is 1201421111129. The next prime is 1201421111221. The reversal of 1201421111203 is 3021111241021.

It is a strong prime.

It is an emirp because it is prime and its reverse (3021111241021) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1201421111203 - 2²¹ = 1201419014051 is a prime.

It is not a weakly prime, because it can be changed into another prime (1201421117203) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 600710555601 + 600710555602.

It is an arithmetic number, because the mean of its divisors is an integer number (600710555602).

Almost surely, 2^{1201421111203} is an apocalyptic number.

1201421111203 is a deficient number, since it is larger than the sum of its proper divisors (1).

1201421111203 is an equidigital number, since it uses as much as digits as its factorization.

1201421111203 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 96, while the sum is 19.

Adding to 1201421111203 its reverse (3021111241021), we get a palindrome (4222532352224).

The spelling of 1201421111203 in words is "one trillion, two hundred one billion, four hundred twenty-one million, one hundred eleven thousand, two hundred three".