105012216 has 48 divisors (see below), whose sum is σ = 292102200. Its totient is φ = 34057152.

The previous prime is 105012209. The next prime is 105012217. The reversal of 105012216 is 612210501.

It is a super-2 number, since 2×105012216² = 22055131018461312, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (105012217) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 17046 + ... + 22373.

Almost surely, 2^105012216 is an apocalyptic number.

It is an amenable number.

105012216 is an abundant number, since it is smaller than the sum of its proper divisors (187089984).

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

105012216 is a wasteful number, since it uses less digits than its factorization.

105012216 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39468 (or 39461 counting only the distinct ones).

The product of its (nonzero) digits is 120, while the sum is 18.

The square root of 105012216 is about 10247.5468283878. The cubic root of 105012216 is about 471.7876929887.

Adding to 105012216 its reverse (612210501), we get a palindrome (717222717).

The spelling of 105012216 in words is "one hundred five million, twelve thousand, two hundred sixteen".