212222650172647 has 4 divisors (see below), whose sum is σ = 212257435074696. Its totient is φ = 212187865270600.

The previous prime is 212222650172593. The next prime is 212222650172759. The reversal of 212222650172647 is 746271056222212.

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

It is a cyclic number.

It is not a de Polignac number, because 212222650172647 - 2²³ = 212222641784039 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 212222650172647.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212222659172647) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 17392441873 + ... + 17392454074.

It is an arithmetic number, because the mean of its divisors is an integer number (53064358768674).

Almost surely, 2^{212222650172647} is an apocalyptic number.

212222650172647 is a deficient number, since it is larger than the sum of its proper divisors (34784902049).

212222650172647 is an equidigital number, since it uses as much as digits as its factorization.

212222650172647 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34784902048.

The product of its (nonzero) digits is 2257920, while the sum is 49.

The spelling of 212222650172647 in words is "two hundred twelve trillion, two hundred twenty-two billion, six hundred fifty million, one hundred seventy-two thousand, six hundred forty-seven".