1211042015303 has 24 divisors (see below), whose sum is σ = 1308973512096. Its totient is φ = 1119941928000.

The previous prime is 1211042015269. The next prime is 1211042015333. The reversal of 1211042015303 is 3035102401121.

It is not a de Polignac number, because 1211042015303 - 2¹⁰ = 1211042014279 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1211042015333) 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 in 23 ways as a sum of consecutive naturals, for example, 2354825 + ... + 2822637.

It is an arithmetic number, because the mean of its divisors is an integer number (54540563004).

Almost surely, 2^{1211042015303} is an apocalyptic number.

1211042015303 is a deficient number, since it is larger than the sum of its proper divisors (97931496793).

1211042015303 is a wasteful number, since it uses less digits than its factorization.

1211042015303 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 468023 (or 468004 counting only the distinct ones).

The product of its (nonzero) digits is 720, while the sum is 23.

Adding to 1211042015303 its reverse (3035102401121), we get a palindrome (4246144416424).

The spelling of 1211042015303 in words is "one trillion, two hundred eleven billion, forty-two million, fifteen thousand, three hundred three".