1012123223111 has 256 divisors, whose sum is σ = 1522242699264. Its totient is φ = 646963200000.

The previous prime is 1012123223107. The next prime is 1012123223119. The reversal of 1012123223111 is 1113223212101.

It is not a de Polignac number, because 1012123223111 - 2² = 1012123223107 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1012123223119) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 255 ways as a sum of consecutive naturals, for example, 3734771906 + ... + 3734772176.

It is an arithmetic number, because the mean of its divisors is an integer number (5946260544).

Almost surely, 2^{1012123223111} is an apocalyptic number.

1012123223111 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

1012123223111 is a deficient number, since it is larger than the sum of its proper divisors (510119476153).

1012123223111 is a wasteful number, since it uses less digits than its factorization.

1012123223111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 514.

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

Adding to 1012123223111 its reverse (1113223212101), we get a palindrome (2125346435212).

It can be divided in two parts, 10121 and 23223111, that added together give a palindrome (23233232).

The spelling of 1012123223111 in words is "one trillion, twelve billion, one hundred twenty-three million, two hundred twenty-three thousand, one hundred eleven".