212212360222566 has 32 divisors (see below), whose sum is σ = 463724410123008. Its totient is φ = 64207383577440.

The previous prime is 212212360222543. The next prime is 212212360222591. The reversal of 212212360222566 is 665222063212212.

It is a super-2 number, since 2×212212360222566² (a number of 29 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 2484763165 + ... + 2484848568.

It is an arithmetic number, because the mean of its divisors is an integer number (14491387816344).

Almost surely, 2^{212212360222566} is an apocalyptic number.

212212360222566 is an abundant number, since it is smaller than the sum of its proper divisors (251512049900442).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

212212360222566 is a wasteful number, since it uses less digits than its factorization.

212212360222566 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4969612396.

The product of its (nonzero) digits is 414720, while the sum is 42.

The spelling of 212212360222566 in words is "two hundred twelve trillion, two hundred twelve billion, three hundred sixty million, two hundred twenty-two thousand, five hundred sixty-six".