105421250220 has 144 divisors (see below), whose sum is σ = 348690085632. Its totient is φ = 23590744320.

The previous prime is 105421250213. The next prime is 105421250227. The reversal of 105421250220 is 22052124501.

It is an interprime number because it is at equal distance from previous prime (105421250213) and next prime (105421250227).

It is a super-2 number, since 2×105421250220² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (105421250227) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 361032 + ... + 584111.

It is an arithmetic number, because the mean of its divisors is an integer number (2421458928).

Almost surely, 2^105421250220 is an apocalyptic number.

105421250220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

105421250220 is an abundant number, since it is smaller than the sum of its proper divisors (243268835412).

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

105421250220 is a wasteful number, since it uses less digits than its factorization.

105421250220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 945192 (or 945177 counting only the distinct ones).

The product of its (nonzero) digits is 1600, while the sum is 24.

Adding to 105421250220 its reverse (22052124501), we get a palindrome (127473374721).

The spelling of 105421250220 in words is "one hundred five billion, four hundred twenty-one million, two hundred fifty thousand, two hundred twenty".