105231222520 has 32 divisors (see below), whose sum is σ = 237405057120. Its totient is φ = 41979634560.

The previous prime is 105231222517. The next prime is 105231222559. The reversal of 105231222520 is 25222132501.

It is a super-2 number, since 2×105231222520² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3511596 + ... + 3541435.

It is an arithmetic number, because the mean of its divisors is an integer number (7418908035).

Almost surely, 2^105231222520 is an apocalyptic number.

105231222520 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

105231222520 is an abundant number, since it is smaller than the sum of its proper divisors (132173834600).

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

105231222520 is a wasteful number, since it uses less digits than its factorization.

105231222520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7053415 (or 7053411 counting only the distinct ones).

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

The spelling of 105231222520 in words is "one hundred five billion, two hundred thirty-one million, two hundred twenty-two thousand, five hundred twenty".