1012121231103 has 24 divisors (see below), whose sum is σ = 1512477766800. Its totient is φ = 651431781504.

The previous prime is 1012121231027. The next prime is 1012121231111. The reversal of 1012121231103 is 3011321212101.

It is not a de Polignac number, because 1012121231103 - 2³⁸ = 737243324159 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1012121231123) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 3544483 + ... + 3819371.

It is an arithmetic number, because the mean of its divisors is an integer number (63019906950).

Almost surely, 2^{1012121231103} is an apocalyptic number.

1012121231103 is a deficient number, since it is larger than the sum of its proper divisors (500356535697).

1012121231103 is a wasteful number, since it uses less digits than its factorization.

1012121231103 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 289031 (or 289028 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 18.

Adding to 1012121231103 its reverse (3011321212101), we get a palindrome (4023442443204).

The spelling of 1012121231103 in words is "one trillion, twelve billion, one hundred twenty-one million, two hundred thirty-one thousand, one hundred three".