1101231211303 has 4 divisors (see below), whose sum is σ = 1159190748760. Its totient is φ = 1043271673848.

The previous prime is 1101231211177. The next prime is 1101231211349. The reversal of 1101231211303 is 3031121321011.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1101231211303 - 2³³ = 1092641276711 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (19), and also a Moran number because the ratio is a prime number: 57959537437 = 1101231211303 / (1 + 1 + 0 + 1 + 2 + 3 + 1 + 2 + 1 + 1 + 3 + 0 + 3).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1101231212303) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 28979768700 + ... + 28979768737.

It is an arithmetic number, because the mean of its divisors is an integer number (289797687190).

Almost surely, 2^{1101231211303} is an apocalyptic number.

1101231211303 is a deficient number, since it is larger than the sum of its proper divisors (57959537457).

1101231211303 is an equidigital number, since it uses as much as digits as its factorization.

1101231211303 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 57959537456.

The product of its (nonzero) digits is 108, while the sum is 19.

Adding to 1101231211303 its reverse (3031121321011), we get a palindrome (4132352532314).

The spelling of 1101231211303 in words is "one trillion, one hundred one billion, two hundred thirty-one million, two hundred eleven thousand, three hundred three".