1145123105412 has 96 divisors (see below), whose sum is σ = 3139323062400. Its totient is φ = 320289223680.

The previous prime is 1145123105389. The next prime is 1145123105431. The reversal of 1145123105412 is 2145013215411.

It is a super-2 number, since 2×1145123105412² (a number of 25 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1145123105412.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 39956464 + ... + 39985112.

It is an arithmetic number, because the mean of its divisors is an integer number (32701281900).

Almost surely, 2^{1145123105412} is an apocalyptic number.

1145123105412 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1145123105412 is an abundant number, since it is smaller than the sum of its proper divisors (1994199956988).

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

1145123105412 is a wasteful number, since it uses less digits than its factorization.

1145123105412 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 51973 (or 51971 counting only the distinct ones).

The product of its (nonzero) digits is 4800, while the sum is 30.

The spelling of 1145123105412 in words is "one trillion, one hundred forty-five billion, one hundred twenty-three million, one hundred five thousand, four hundred twelve".