212003100 has 54 divisors (see below), whose sum is σ = 664514760. Its totient is φ = 56533920.

The previous prime is 212003093. The next prime is 212003101. The reversal of 212003100 is 1300212.

It is a happy number.

It is a super-2 number, since 2×212003100² = 89890628819220000, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (9).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212003101) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 116880 + ... + 118679.

Almost surely, 2^212003100 is an apocalyptic number.

212003100 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

212003100 is an abundant number, since it is smaller than the sum of its proper divisors (452511660).

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

212003100 is a wasteful number, since it uses less digits than its factorization.

212003100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 235579 (or 235569 counting only the distinct ones).

The product of its (nonzero) digits is 12, while the sum is 9.

The square root of 212003100 is about 14560.3262326089. The cubic root of 212003100 is about 596.2761021233.

Adding to 212003100 its reverse (1300212), we get a palindrome (213303312).

The spelling of 212003100 in words is "two hundred twelve million, three thousand, one hundred".