822011111021 has 8 divisors (see below), whose sum is σ = 823875212160. Its totient is φ = 820148329728.

The previous prime is 822011111003. The next prime is 822011111027. The reversal of 822011111021 is 120111110228.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 822011111021 - 2⁶ = 822011110957 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 822011110984 and 822011111002.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (822011111027) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 922445 + ... + 1579533.

It is an arithmetic number, because the mean of its divisors is an integer number (102984401520).

Almost surely, 2^822011111021 is an apocalyptic number.

It is an amenable number.

822011111021 is a deficient number, since it is larger than the sum of its proper divisors (1864101139).

822011111021 is a wasteful number, since it uses less digits than its factorization.

822011111021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 659923.

The product of its (nonzero) digits is 64, while the sum is 20.

Adding to 822011111021 its reverse (120111110228), we get a palindrome (942122221249).

The spelling of 822011111021 in words is "eight hundred twenty-two billion, eleven million, one hundred eleven thousand, twenty-one".