1012123290072 has 16 divisors (see below), whose sum is σ = 2530308225240. Its totient is φ = 337374430016.

The previous prime is 1012123290071. The next prime is 1012123290107. The reversal of 1012123290072 is 2700923212101.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1012123290071) 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, 21085901853 + ... + 21085901900.

Almost surely, 2^{1012123290072} is an apocalyptic number.

1012123290072 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1012123290072 is an abundant number, since it is smaller than the sum of its proper divisors (1518184935168).

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

1012123290072 is a wasteful number, since it uses less digits than its factorization.

1012123290072 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42171803762 (or 42171803758 counting only the distinct ones).

The product of its (nonzero) digits is 3024, while the sum is 30.

The spelling of 1012123290072 in words is "one trillion, twelve billion, one hundred twenty-three million, two hundred ninety thousand, seventy-two".