1001144243220 has 48 divisors (see below), whose sum is σ = 3058040599488. Its totient is φ = 242701634560.

The previous prime is 1001144243191. The next prime is 1001144243227. The reversal of 1001144243220 is 223424411001.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1001144243227) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 758441949 + ... + 758443268.

It is an arithmetic number, because the mean of its divisors is an integer number (63709179156).

Almost surely, 2^{1001144243220} is an apocalyptic number.

1001144243220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1001144243220 is an abundant number, since it is smaller than the sum of its proper divisors (2056896356268).

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

1001144243220 is a wasteful number, since it uses less digits than its factorization.

1001144243220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1516885240 (or 1516885238 counting only the distinct ones).

The product of its (nonzero) digits is 1536, while the sum is 24.

Adding to 1001144243220 its reverse (223424411001), we get a palindrome (1224568654221).

The spelling of 1001144243220 in words is "one trillion, one billion, one hundred forty-four million, two hundred forty-three thousand, two hundred twenty".