212244461 has 8 divisors (see below), whose sum is σ = 249350304. Its totient is φ = 178107120.

The previous prime is 212244449. The next prime is 212244463. The reversal of 212244461 is 164442212.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 212244461 - 2¹⁸ = 211982317 is a prime.

It is a super-2 number, since 2×212244461² = 90095422450361042, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 212244461.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212244463) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 741971 + ... + 742256.

It is an arithmetic number, because the mean of its divisors is an integer number (31168788).

Almost surely, 2^212244461 is an apocalyptic number.

It is an amenable number.

212244461 is a deficient number, since it is larger than the sum of its proper divisors (37105843).

212244461 is a wasteful number, since it uses less digits than its factorization.

212244461 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1484251.

The product of its digits is 3072, while the sum is 26.

The square root of 212244461 is about 14568.6121851053. The cubic root of 212244461 is about 596.5022988393.

Adding to 212244461 its reverse (164442212), we get a palindrome (376686673).

The spelling of 212244461 in words is "two hundred twelve million, two hundred forty-four thousand, four hundred sixty-one".