1211310011303 has 16 divisors (see below), whose sum is σ = 1388482360320. Its totient is φ = 1035170279136.

The previous prime is 1211310011299. The next prime is 1211310011311. The reversal of 1211310011303 is 3031100131121.

It is not a de Polignac number, because 1211310011303 - 2² = 1211310011299 is a prime.

It is a super-3 number, since 3×1211310011303³ (a number of 37 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1211310011393) 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 15 ways as a sum of consecutive naturals, for example, 33752453 + ... + 33788321.

It is an arithmetic number, because the mean of its divisors is an integer number (86780147520).

Almost surely, 2^{1211310011303} is an apocalyptic number.

1211310011303 is a deficient number, since it is larger than the sum of its proper divisors (177172349017).

1211310011303 is a wasteful number, since it uses less digits than its factorization.

1211310011303 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 50126.

The product of its (nonzero) digits is 54, while the sum is 17.

Adding to 1211310011303 its reverse (3031100131121), we get a palindrome (4242410142424).

The spelling of 1211310011303 in words is "one trillion, two hundred eleven billion, three hundred ten million, eleven thousand, three hundred three".