1131212122103 has 4 divisors (see below), whose sum is σ = 1292813853840. Its totient is φ = 969610390368.

The previous prime is 1131212122097. The next prime is 1131212122123. The reversal of 1131212122103 is 3012212121311.

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 1131212122103 - 2⁶ = 1131212122039 is a prime.

It is a super-3 number, since 3×1131212122103³ (a number of 37 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1131212122123) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 80800865858 + ... + 80800865871.

It is an arithmetic number, because the mean of its divisors is an integer number (323203463460).

Almost surely, 2^{1131212122103} is an apocalyptic number.

1131212122103 is a deficient number, since it is larger than the sum of its proper divisors (161601731737).

1131212122103 is an equidigital number, since it uses as much as digits as its factorization.

1131212122103 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 161601731736.

The product of its (nonzero) digits is 144, while the sum is 20.

Adding to 1131212122103 its reverse (3012212121311), we get a palindrome (4143424243414).

The spelling of 1131212122103 in words is "one trillion, one hundred thirty-one billion, two hundred twelve million, one hundred twenty-two thousand, one hundred three".