100858212 has 144 divisors (see below), whose sum is σ = 332422272. Its totient is φ = 25021440.

The previous prime is 100858207. The next prime is 100858223. The reversal of 100858212 is 212858001.

It is a super-3 number, since 3×100858212³ (a number of 25 digits) contains 333 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 54787 + ... + 56597.

It is an arithmetic number, because the mean of its divisors is an integer number (2308488).

Almost surely, 2^100858212 is an apocalyptic number.

100858212 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 100858212, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (166211136).

100858212 is an abundant number, since it is smaller than the sum of its proper divisors (231564060).

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

100858212 is a wasteful number, since it uses less digits than its factorization.

100858212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1858 (or 1853 counting only the distinct ones).

The product of its (nonzero) digits is 1280, while the sum is 27.

The square root of 100858212 is about 10042.8189269746. The cubic root of 100858212 is about 465.4829252706.

The spelling of 100858212 in words is "one hundred million, eight hundred fifty-eight thousand, two hundred twelve".