105231222520000 has 140 divisors (see below), whose sum is σ = 261638837784016. Its totient is φ = 41979634560000.

The previous prime is 105231222519967. The next prime is 105231222520001. The reversal of 105231222520000 is 25222132501.

It is a super-2 number, since 2×105231222520000² (a number of 29 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (25).

It is not an unprimeable number, because it can be changed into a prime (105231222520001) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 11393485 + ... + 18446515.

Almost surely, 2^{105231222520000} is an apocalyptic number.

105231222520000 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 105231222520000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (130819418892008).

105231222520000 is an abundant number, since it is smaller than the sum of its proper divisors (156407615264016).

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

105231222520000 is an frugal number, since it uses more digits than its factorization.

105231222520000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7053436 (or 7053411 counting only the distinct ones).

The product of its (nonzero) digits is 2400, while the sum is 25.

Adding to 105231222520000 its reverse (25222132501), we get a palindrome (105256444652501).

The spelling of 105231222520000 in words is "one hundred five trillion, two hundred thirty-one billion, two hundred twenty-two million, five hundred twenty thousand".