212065356556 has 12 divisors (see below), whose sum is σ = 371356784680. Its totient is φ = 105963418080.

The previous prime is 212065356541. The next prime is 212065356577. The reversal of 212065356556 is 655653560212.

It is a happy number.

It is a super-2 number, since 2×212065356556² (a number of 23 digits) contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 17308161 + ... + 17320408.

Almost surely, 2^212065356556 is an apocalyptic number.

It is an amenable number.

212065356556 is a deficient number, since it is larger than the sum of its proper divisors (159291428124).

212065356556 is a wasteful number, since it uses less digits than its factorization.

212065356556 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34630104 (or 34630102 counting only the distinct ones).

The product of its (nonzero) digits is 1620000, while the sum is 46.

The spelling of 212065356556 in words is "two hundred twelve billion, sixty-five million, three hundred fifty-six thousand, five hundred fifty-six".