212994641 has 4 divisors (see below), whose sum is σ = 213174372. Its totient is φ = 212814912.

The previous prime is 212994629. The next prime is 212994653. The reversal of 212994641 is 146499212.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (212994629) and next prime (212994653).

It can be written as a sum of positive squares in 2 ways, for example, as 169104016 + 43890625 = 13004^2 + 6625^2 .

It is a cyclic number.

It is not a de Polignac number, because 212994641 - 2⁶ = 212994577 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 212994595 and 212994604.

It is not an unprimeable number, because it can be changed into a prime (212994671) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 88076 + ... + 90461.

It is an arithmetic number, because the mean of its divisors is an integer number (53293593).

Almost surely, 2^212994641 is an apocalyptic number.

It is an amenable number.

212994641 is a deficient number, since it is larger than the sum of its proper divisors (179731).

212994641 is a wasteful number, since it uses less digits than its factorization.

212994641 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 179730.

The product of its digits is 31104, while the sum is 38.

The square root of 212994641 is about 14594.3359218568. The cubic root of 212994641 is about 597.2042534204.

The spelling of 212994641 in words is "two hundred twelve million, nine hundred ninety-four thousand, six hundred forty-one".