212466540521 has 8 divisors (see below), whose sum is σ = 220248218880. Its totient is φ = 204792195888.

The previous prime is 212466540497. The next prime is 212466540527. The reversal of 212466540521 is 125045664212.

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 212466540521 - 2³⁰ = 211392798697 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (212466540527) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 26829401 + ... + 26837318.

It is an arithmetic number, because the mean of its divisors is an integer number (27531027360).

Almost surely, 2^212466540521 is an apocalyptic number.

It is an amenable number.

212466540521 is a deficient number, since it is larger than the sum of its proper divisors (7781678359).

212466540521 is a wasteful number, since it uses less digits than its factorization.

212466540521 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 53666863.

The product of its (nonzero) digits is 115200, while the sum is 38.

The spelling of 212466540521 in words is "two hundred twelve billion, four hundred sixty-six million, five hundred forty thousand, five hundred twenty-one".