1045440220000 has 120 divisors (see below), whose sum is σ = 2805753052872. Its totient is φ = 380160000000.

The previous prime is 1045440219979. The next prime is 1045440220021. The reversal of 1045440220000 is 220445401.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (1045440219979) and next prime (1045440220021).

It is a Harshad number since it is a multiple of its sum of digits (22).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 2156001 + ... + 2596000.

Almost surely, 2^{1045440220000} is an apocalyptic number.

1045440220000 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1045440220000 is an abundant number, since it is smaller than the sum of its proper divisors (1760312832872).

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

1045440220000 is an equidigital number, since it uses as much as digits as its factorization.

1045440220000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4752042 (or 4752019 counting only the distinct ones).

The product of its (nonzero) digits is 1280, while the sum is 22.

Adding to 1045440220000 its reverse (220445401), we get a palindrome (1045660665401).

The spelling of 1045440220000 in words is "one trillion, forty-five billion, four hundred forty million, two hundred twenty thousand".