20311220001120 has 48 divisors (see below), whose sum is σ = 63980343005040. Its totient is φ = 5416325333504.

The previous prime is 20311220001067. The next prime is 20311220001157. The reversal of 20311220001120 is 2110002211302.

It is a tau number, because it is divible by the number of its divisors (48).

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a self number, because there is not a number n which added to its sum of digits gives 20311220001120.

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 21157520355 + ... + 21157521314.

It is an arithmetic number, because the mean of its divisors is an integer number (1332923812605).

Almost surely, 2^{20311220001120} is an apocalyptic number.

20311220001120 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20311220001120 is an abundant number, since it is smaller than the sum of its proper divisors (43669123003920).

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

20311220001120 is a wasteful number, since it uses less digits than its factorization.

20311220001120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42315041687 (or 42315041679 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 15.

Adding to 20311220001120 its reverse (2110002211302), we get a palindrome (22421222212422).

The spelling of 20311220001120 in words is "twenty trillion, three hundred eleven billion, two hundred twenty million, one thousand, one hundred twenty".