100206512 has 40 divisors (see below), whose sum is σ = 227056896. Its totient is φ = 41944896.

The previous prime is 100206511. The next prime is 100206521. The reversal of 100206512 is 215602001.

It is a super-2 number, since 2×100206512² = 20082690094412288, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (100206511) 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, 5588 + ... + 15219.

Almost surely, 2^100206512 is an apocalyptic number.

It is an amenable number.

100206512 is an abundant number, since it is smaller than the sum of its proper divisors (126850384).

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

100206512 is a wasteful number, since it uses less digits than its factorization.

100206512 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20865 (or 20859 counting only the distinct ones).

The product of its (nonzero) digits is 120, while the sum is 17.

The square root of 100206512 is about 10010.3202745966. The cubic root of 100206512 is about 464.4781782657.

Adding to 100206512 its reverse (215602001), we get a palindrome (315808513).

The spelling of 100206512 in words is "one hundred million, two hundred six thousand, five hundred twelve".