105071221515650 has 24 divisors (see below), whose sum is σ = 210465739098804. Its totient is φ = 38795527944000.

The previous prime is 105071221515599. The next prime is 105071221515677. The reversal of 105071221515650 is 56515122170501.

It can be written as a sum of positive squares in 6 ways, for example, as 51721972856401 + 53349248659249 = 7191799^2 + 7304057^2 .

It is a super-2 number, since 2×105071221515650² (a number of 29 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 105071221515598 and 105071221515607.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 80824015901 + ... + 80824017200.

Almost surely, 2^{105071221515650} is an apocalyptic number.

105071221515650 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

105071221515650 is an abundant number, since it is smaller than the sum of its proper divisors (105394517583154).

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

105071221515650 is a wasteful number, since it uses less digits than its factorization.

105071221515650 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 161648033126 (or 161648033121 counting only the distinct ones).

The product of its (nonzero) digits is 105000, while the sum is 41.

The spelling of 105071221515650 in words is "one hundred five trillion, seventy-one billion, two hundred twenty-one million, five hundred fifteen thousand, six hundred fifty".