1211002112303 has 16 divisors (see below), whose sum is σ = 1272988168320. Its totient is φ = 1150570171296.

The previous prime is 1211002112297. The next prime is 1211002112321. The reversal of 1211002112303 is 3032112001121.

It is a cyclic number.

It is not a de Polignac number, because 1211002112303 - 2¹⁰ = 1211002111279 is a prime.

It is a super-2 number, since 2×1211002112303² (a number of 25 digits) contains 22 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 (1211002114303) 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, 6118628 + ... + 6313446.

It is an arithmetic number, because the mean of its divisors is an integer number (79561760520).

Almost surely, 2^{1211002112303} is an apocalyptic number.

1211002112303 is a deficient number, since it is larger than the sum of its proper divisors (61986056017).

1211002112303 is a wasteful number, since it uses less digits than its factorization.

1211002112303 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 198806.

The product of its (nonzero) digits is 72, while the sum is 17.

Adding to 1211002112303 its reverse (3032112001121), we get a palindrome (4243114113424).

The spelling of 1211002112303 in words is "one trillion, two hundred eleven billion, two million, one hundred twelve thousand, three hundred three".