1212320211303 has 16 divisors (see below), whose sum is σ = 1681966550016. Its totient is φ = 776092580640.

The previous prime is 1212320211301. The next prime is 1212320211379. The reversal of 1212320211303 is 3031120232121.

It is not a de Polignac number, because 1212320211303 - 2¹ = 1212320211301 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1212320211303.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1212320211301) 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, 81105883 + ... + 81120828.

It is an arithmetic number, because the mean of its divisors is an integer number (105122909376).

Almost surely, 2^{1212320211303} is an apocalyptic number.

1212320211303 is a deficient number, since it is larger than the sum of its proper divisors (469646338713).

1212320211303 is a wasteful number, since it uses less digits than its factorization.

1212320211303 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 162226814.

The product of its (nonzero) digits is 432, while the sum is 21.

Adding to 1212320211303 its reverse (3031120232121), we get a palindrome (4243440443424).

The spelling of 1212320211303 in words is "one trillion, two hundred twelve billion, three hundred twenty million, two hundred eleven thousand, three hundred three".