212247615833401 has 4 divisors (see below), whose sum is σ = 224732769705972. Its totient is φ = 199762461960832.

The previous prime is 212247615833369. The next prime is 212247615833423. The reversal of 212247615833401 is 104338516742212.

It is a happy number.

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

It can be written as a sum of positive squares in 2 ways, for example, as 105820332183801 + 106427283649600 = 10286901^2 + 10316360^2 .

It is a cyclic number.

It is not a de Polignac number, because 212247615833401 - 2⁵ = 212247615833369 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (212247615833441) 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, 6242576936260 + ... + 6242576936293.

It is an arithmetic number, because the mean of its divisors is an integer number (56183192426493).

Almost surely, 2^{212247615833401} is an apocalyptic number.

It is an amenable number.

212247615833401 is a deficient number, since it is larger than the sum of its proper divisors (12485153872571).

212247615833401 is a wasteful number, since it uses less digits than its factorization.

212247615833401 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12485153872570.

The product of its (nonzero) digits is 1935360, while the sum is 49.

The spelling of 212247615833401 in words is "two hundred twelve trillion, two hundred forty-seven billion, six hundred fifteen million, eight hundred thirty-three thousand, four hundred one".