100212312 has 16 divisors (see below), whose sum is σ = 250530840. Its totient is φ = 33404096.

The previous prime is 100212293. The next prime is 100212341. The reversal of 100212312 is 213212001.

It is a Harshad number since it is a multiple of its sum of digits (12).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2087733 + ... + 2087780.

Almost surely, 2^100212312 is an apocalyptic number.

100212312 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

100212312 is an abundant number, since it is smaller than the sum of its proper divisors (150318528).

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

100212312 is a wasteful number, since it uses less digits than its factorization.

100212312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4175522 (or 4175518 counting only the distinct ones).

The product of its (nonzero) digits is 24, while the sum is 12.

The square root of 100212312 is about 10010.6099714253. The cubic root of 100212312 is about 464.4871394979.

Adding to 100212312 its reverse (213212001), we get a palindrome (313424313).

The spelling of 100212312 in words is "one hundred million, two hundred twelve thousand, three hundred twelve".