820112211028 has 36 divisors (see below), whose sum is σ = 1592845814560. Its totient is φ = 369159048720.

The previous prime is 820112211007. The next prime is 820112211031.

820112211028 is nontrivially palindromic in base 10.

It is a junction number, because it is equal to n+sod(n) for n = 820112210987 and 820112211005.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 8175618 + ... + 8275321.

Almost surely, 2^820112211028 is an apocalyptic number.

It is an amenable number.

820112211028 is a deficient number, since it is larger than the sum of its proper divisors (772733603532).

820112211028 is a wasteful number, since it uses less digits than its factorization.

820112211028 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16451068 (or 16451055 counting only the distinct ones).

The product of its (nonzero) digits is 1024, while the sum is 28.

The spelling of 820112211028 in words is "eight hundred twenty billion, one hundred twelve million, two hundred eleven thousand, twenty-eight".