212421685533 has 8 divisors (see below), whose sum is σ = 284811199200. Its totient is φ = 140823314448.

The previous prime is 212421685517. The next prime is 212421685549. The reversal of 212421685533 is 335586124212.

212421685533 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (212421685517) and next prime (212421685549).

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

It is not a de Polignac number, because 212421685533 - 2⁴ = 212421685517 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212421685583) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 197785018 + ... + 197786091.

It is an arithmetic number, because the mean of its divisors is an integer number (35601399900).

Almost surely, 2^212421685533 is an apocalyptic number.

It is an amenable number.

212421685533 is a deficient number, since it is larger than the sum of its proper divisors (72389513667).

212421685533 is a wasteful number, since it uses less digits than its factorization.

212421685533 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 395571291.

The product of its digits is 345600, while the sum is 42.

The spelling of 212421685533 in words is "two hundred twelve billion, four hundred twenty-one million, six hundred eighty-five thousand, five hundred thirty-three".