821232847911 has 96 divisors (see below), whose sum is σ = 1422101007360. Its totient is φ = 417705652224.

The previous prime is 821232847837. The next prime is 821232847927. The reversal of 821232847911 is 119748232128.

It is not a de Polignac number, because 821232847911 - 2⁷ = 821232847783 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (821232847991) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 28141650 + ... + 28170816.

It is an arithmetic number, because the mean of its divisors is an integer number (14813552160).

Almost surely, 2^821232847911 is an apocalyptic number.

821232847911 is a deficient number, since it is larger than the sum of its proper divisors (600868159449).

821232847911 is a wasteful number, since it uses less digits than its factorization.

821232847911 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29813 (or 29806 counting only the distinct ones).

The product of its digits is 387072, while the sum is 48.

The spelling of 821232847911 in words is "eight hundred twenty-one billion, two hundred thirty-two million, eight hundred forty-seven thousand, nine hundred eleven".