212040461441 has 4 divisors (see below), whose sum is σ = 212076670212. Its totient is φ = 212004252672.

The previous prime is 212040461371. The next prime is 212040461447. The reversal of 212040461441 is 144164040212.

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

It can be written as a sum of positive squares in 2 ways, for example, as 174052502416 + 37987959025 = 417196^2 + 194905^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-212040461441 is a prime.

It is a super-2 number, since 2×212040461441² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (212040461447) 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 3 ways as a sum of consecutive naturals, for example, 18095600 + ... + 18107313.

It is an arithmetic number, because the mean of its divisors is an integer number (53019167553).

Almost surely, 2^212040461441 is an apocalyptic number.

It is an amenable number.

212040461441 is a deficient number, since it is larger than the sum of its proper divisors (36208771).

212040461441 is an equidigital number, since it uses as much as digits as its factorization.

212040461441 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36208770.

The product of its (nonzero) digits is 6144, while the sum is 29.

The spelling of 212040461441 in words is "two hundred twelve billion, forty million, four hundred sixty-one thousand, four hundred forty-one".