821067512022 has 48 divisors (see below), whose sum is σ = 1799005004160. Its totient is φ = 270613633536.

The previous prime is 821067512011. The next prime is 821067512047. The reversal of 821067512022 is 220215760128.

It is a happy number.

821067512022 is a `hidden beast` number, since 82 + 1 + 0 + 67 + 512 + 0 + 2 + 2 = 666.

It is a super-2 number, since 2×821067512022² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1646523 + ... + 2086425.

It is an arithmetic number, because the mean of its divisors is an integer number (37479270920).

Almost surely, 2^821067512022 is an apocalyptic number.

821067512022 is an abundant number, since it is smaller than the sum of its proper divisors (977937492138).

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

821067512022 is a wasteful number, since it uses less digits than its factorization.

821067512022 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 441077 (or 441074 counting only the distinct ones).

The product of its (nonzero) digits is 26880, while the sum is 36.

The spelling of 821067512022 in words is "eight hundred twenty-one billion, sixty-seven million, five hundred twelve thousand, twenty-two".