105515213020 has 48 divisors (see below), whose sum is σ = 253334450880. Its totient is φ = 36162653184.

The previous prime is 105515212991. The next prime is 105515213039. The reversal of 105515213020 is 20312515501.

It is a super-2 number, since 2×105515213020² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 220822 + ... + 509698.

It is an arithmetic number, because the mean of its divisors is an integer number (5277801060).

Almost surely, 2^105515213020 is an apocalyptic number.

105515213020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

105515213020 is an abundant number, since it is smaller than the sum of its proper divisors (147819237860).

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

105515213020 is a wasteful number, since it uses less digits than its factorization.

105515213020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 291502 (or 291500 counting only the distinct ones).

The product of its (nonzero) digits is 1500, while the sum is 25.

Adding to 105515213020 its reverse (20312515501), we get a palindrome (125827728521).

The spelling of 105515213020 in words is "one hundred five billion, five hundred fifteen million, two hundred thirteen thousand, twenty".