105220154112 has 72 divisors (see below), whose sum is σ = 294777994560. Its totient is φ = 33227412480.

The previous prime is 105220154111. The next prime is 105220154141. The reversal of 105220154112 is 211451022501.

It is a happy number.

It is a super-2 number, since 2×105220154112² (a number of 23 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is not an unprimeable number, because it can be changed into a prime (105220154111) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3590814 + ... + 3619997.

Almost surely, 2^105220154112 is an apocalyptic number.

105220154112 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

105220154112 is an abundant number, since it is smaller than the sum of its proper divisors (189557840448).

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

105220154112 is an equidigital number, since it uses as much as digits as its factorization.

105220154112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7210849 (or 7210835 counting only the distinct ones).

The product of its (nonzero) digits is 800, while the sum is 24.

Adding to 105220154112 its reverse (211451022501), we get a palindrome (316671176613).

The spelling of 105220154112 in words is "one hundred five billion, two hundred twenty million, one hundred fifty-four thousand, one hundred twelve".