1022079229891 has 2 divisors, whose sum is σ = 1022079229892. Its totient is φ = 1022079229890.

The previous prime is 1022079229867. The next prime is 1022079229937. The reversal of 1022079229891 is 1989229702201.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1022079229891 - 2¹⁷ = 1022079098819 is a prime.

It is not a weakly prime, because it can be changed into another prime (1022079229811) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 511039614945 + 511039614946.

It is an arithmetic number, because the mean of its divisors is an integer number (511039614946).

Almost surely, 2^{1022079229891} is an apocalyptic number.

1022079229891 is a deficient number, since it is larger than the sum of its proper divisors (1).

1022079229891 is an equidigital number, since it uses as much as digits as its factorization.

1022079229891 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 653184, while the sum is 52.

The spelling of 1022079229891 in words is "one trillion, twenty-two billion, seventy-nine million, two hundred twenty-nine thousand, eight hundred ninety-one".