211123001301303 has 128 divisors (see below), whose sum is σ = 350407872460800. Its totient is φ = 110099606077440.

The previous prime is 211123001301269. The next prime is 211123001301307. The reversal of 211123001301303 is 303103100321112.

It is a happy number.

It is not a de Polignac number, because 211123001301303 - 2⁹ = 211123001300791 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a self number, because there is not a number n which added to its sum of digits gives 211123001301303.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (211123001301307) by changing a digit.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 9353717008 + ... + 9353739578.

It is an arithmetic number, because the mean of its divisors is an integer number (2737561503600).

Almost surely, 2^{211123001301303} is an apocalyptic number.

211123001301303 is a deficient number, since it is larger than the sum of its proper divisors (139284871159497).

211123001301303 is a wasteful number, since it uses less digits than its factorization.

211123001301303 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23737.

The product of its (nonzero) digits is 324, while the sum is 21.

Adding to 211123001301303 its reverse (303103100321112), we get a palindrome (514226101622415).

The spelling of 211123001301303 in words is "two hundred eleven trillion, one hundred twenty-three billion, one million, three hundred one thousand, three hundred three".