47211284226821 has 24 divisors (see below), whose sum is σ = 55892007847032. Its totient is φ = 39613030934400.

The previous prime is 47211284226803. The next prime is 47211284226833. The reversal of 47211284226821 is 12862248211274.

47211284226821 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 10767001878721 + 36444282348100 = 3281311^2 + 6036910^2 .

It is not a de Polignac number, because 47211284226821 - 2³⁴ = 47194104357637 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 47211284226821.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (47211284226121) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 11106215 + ... + 14757051.

It is an arithmetic number, because the mean of its divisors is an integer number (2328833660293).

Almost surely, 2^{47211284226821} is an apocalyptic number.

It is an amenable number.

47211284226821 is a deficient number, since it is larger than the sum of its proper divisors (8680723620211).

47211284226821 is a wasteful number, since it uses less digits than its factorization.

47211284226821 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3659093 (or 3659082 counting only the distinct ones).

The product of its digits is 1376256, while the sum is 50.

The spelling of 47211284226821 in words is "forty-seven trillion, two hundred eleven billion, two hundred eighty-four million, two hundred twenty-six thousand, eight hundred twenty-one".