820112211007 has 2 divisors, whose sum is σ = 820112211008. Its totient is φ = 820112211006.

The previous prime is 820112210999. The next prime is 820112211031. The reversal of 820112211007 is 700112211028.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 820112211007 - 2³ = 820112210999 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (820112211307) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 410056105503 + 410056105504.

It is an arithmetic number, because the mean of its divisors is an integer number (410056105504).

Almost surely, 2^820112211007 is an apocalyptic number.

820112211007 is a deficient number, since it is larger than the sum of its proper divisors (1).

820112211007 is an equidigital number, since it uses as much as digits as its factorization.

820112211007 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 448, while the sum is 25.

The spelling of 820112211007 in words is "eight hundred twenty billion, one hundred twelve million, two hundred eleven thousand, seven".