1012123421144 has 32 divisors (see below), whose sum is σ = 2192032011600. Its totient is φ = 432993976320.

The previous prime is 1012123421129. The next prime is 1012123421147. The reversal of 1012123421144 is 4411243212101.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1012123421147) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 338275049 + ... + 338278040.

Almost surely, 2^{1012123421144} is an apocalyptic number.

It is an amenable number.

1012123421144 is an abundant number, since it is smaller than the sum of its proper divisors (1179908590456).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1012123421144 is a wasteful number, since it uses less digits than its factorization.

1012123421144 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 676553123 (or 676553119 counting only the distinct ones).

The product of its (nonzero) digits is 1536, while the sum is 26.

Adding to 1012123421144 its reverse (4411243212101), we get a palindrome (5423366633245).

The spelling of 1012123421144 in words is "one trillion, twelve billion, one hundred twenty-three million, four hundred twenty-one thousand, one hundred forty-four".