1040223145212 has 144 divisors (see below), whose sum is σ = 2852571103200. Its totient is φ = 331022039040.

The previous prime is 1040223145189. The next prime is 1040223145217. The reversal of 1040223145212 is 2125413220401.

1040223145212 is a `hidden beast` number, since 1 + 0 + 402 + 2 + 3 + 1 + 45 + 212 = 666.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1040223145217) 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 47 ways as a sum of consecutive naturals, for example, 2301412 + ... + 2716052.

It is an arithmetic number, because the mean of its divisors is an integer number (19809521550).

Almost surely, 2^{1040223145212} is an apocalyptic number.

1040223145212 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1040223145212, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1426285551600).

1040223145212 is an abundant number, since it is smaller than the sum of its proper divisors (1812347957988).

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

1040223145212 is a wasteful number, since it uses less digits than its factorization.

1040223145212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 414778 (or 414764 counting only the distinct ones).

The product of its (nonzero) digits is 3840, while the sum is 27.

Adding to 1040223145212 its reverse (2125413220401), we get a palindrome (3165636365613).

The spelling of 1040223145212 in words is "one trillion, forty billion, two hundred twenty-three million, one hundred forty-five thousand, two hundred twelve".