212400441 has 16 divisors (see below), whose sum is σ = 343273920. Its totient is φ = 128727360.

The previous prime is 212400439. The next prime is 212400443. The reversal of 212400441 is 144004212.

It is an interprime number because it is at equal distance from previous prime (212400439) and next prime (212400443).

It is not a de Polignac number, because 212400441 - 2¹ = 212400439 is a prime.

It is a super-2 number, since 2×212400441² = 90227894673988962, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (212400443) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 357280 + ... + 357873.

It is an arithmetic number, because the mean of its divisors is an integer number (21454620).

Almost surely, 2^212400441 is an apocalyptic number.

It is an amenable number.

212400441 is a deficient number, since it is larger than the sum of its proper divisors (130873479).

212400441 is a wasteful number, since it uses less digits than its factorization.

212400441 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 715173 (or 715167 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 18.

The square root of 212400441 is about 14573.9644915171. The cubic root of 212400441 is about 596.6483876856.

Adding to 212400441 its reverse (144004212), we get a palindrome (356404653).

The spelling of 212400441 in words is "two hundred twelve million, four hundred thousand, four hundred forty-one".