1055131220000 has 960 divisors, whose sum is σ = 3203941910400. Its totient is φ = 338757120000.

The previous prime is 1055131219991. The next prime is 1055131220009. The reversal of 1055131220000 is 221315501.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (1055131219991) and next prime (1055131220009).

It is a super-2 number, since 2×1055131220000² (a number of 25 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is not an unprimeable number, because it can be changed into a prime (1055131220009) 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 159 ways as a sum of consecutive naturals, for example, 17883579971 + ... + 17883580029.

It is an arithmetic number, because the mean of its divisors is an integer number (3337439490).

Almost surely, 2^{1055131220000} is an apocalyptic number.

1055131220000 is a gapful number since it is divisible by the number (10) 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 1055131220000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1601970955200).

1055131220000 is an abundant number, since it is smaller than the sum of its proper divisors (2148810690400).

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

1055131220000 is an equidigital number, since it uses as much as digits as its factorization.

1055131220000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 176 (or 127 counting only the distinct ones).

The product of its (nonzero) digits is 300, while the sum is 20.

Adding to 1055131220000 its reverse (221315501), we get a palindrome (1055352535501).

The spelling of 1055131220000 in words is "one trillion, fifty-five billion, one hundred thirty-one million, two hundred twenty thousand".