1211213032303 has 16 divisors (see below), whose sum is σ = 1242624779136. Its totient is φ = 1180044785920.

The previous prime is 1211213032277. The next prime is 1211213032321. The reversal of 1211213032303 is 3032303121121.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1211213032303 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1211213032333) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 13333425 + ... + 13423957.

It is an arithmetic number, because the mean of its divisors is an integer number (77664048696).

Almost surely, 2^{1211213032303} is an apocalyptic number.

1211213032303 is a deficient number, since it is larger than the sum of its proper divisors (31411746833).

1211213032303 is a wasteful number, since it uses less digits than its factorization.

1211213032303 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 91874.

The product of its (nonzero) digits is 648, while the sum is 22.

Adding to 1211213032303 its reverse (3032303121121), we get a palindrome (4243516153424).

The spelling of 1211213032303 in words is "one trillion, two hundred eleven billion, two hundred thirteen million, thirty-two thousand, three hundred three".