1011233112123 has 16 divisors (see below), whose sum is σ = 1455008635136. Its totient is φ = 621019470240.

The previous prime is 1011233112083. The next prime is 1011233112133. The reversal of 1011233112123 is 3212113321101.

It is not a de Polignac number, because 1011233112123 - 2⁶ = 1011233112059 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1011233112123.

It is not an unprimeable number, because it can be changed into a prime (1011233112133) 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 15 ways as a sum of consecutive naturals, for example, 26602213 + ... + 26640198.

It is an arithmetic number, because the mean of its divisors is an integer number (90938039696).

Almost surely, 2^{1011233112123} is an apocalyptic number.

1011233112123 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

1011233112123 is a deficient number, since it is larger than the sum of its proper divisors (443775523013).

1011233112123 is a wasteful number, since it uses less digits than its factorization.

1011233112123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 53242914.

The product of its (nonzero) digits is 216, while the sum is 21.

Adding to 1011233112123 its reverse (3212113321101), we get a palindrome (4223346433224).

The spelling of 1011233112123 in words is "one trillion, eleven billion, two hundred thirty-three million, one hundred twelve thousand, one hundred twenty-three".